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<a class="jxr_linenumber" name="1" href="#1">1</a>   <em class="jxr_comment">/*</em>
<a class="jxr_linenumber" name="2" href="#2">2</a>   <em class="jxr_comment"> * Copyright 2009 Red Hat, Inc.</em>
<a class="jxr_linenumber" name="3" href="#3">3</a>   <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="4" href="#4">4</a>   <em class="jxr_comment"> * Red Hat licenses this file to you under the Apache License, version 2.0</em>
<a class="jxr_linenumber" name="5" href="#5">5</a>   <em class="jxr_comment"> * (the "License"); you may not use this file except in compliance with the</em>
<a class="jxr_linenumber" name="6" href="#6">6</a>   <em class="jxr_comment"> * License.  You may obtain a copy of the License at:</em>
<a class="jxr_linenumber" name="7" href="#7">7</a>   <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="8" href="#8">8</a>   <em class="jxr_comment"> *    <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
<a class="jxr_linenumber" name="9" href="#9">9</a>   <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="10" href="#10">10</a>  <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing, software</em>
<a class="jxr_linenumber" name="11" href="#11">11</a>  <em class="jxr_comment"> * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT</em>
<a class="jxr_linenumber" name="12" href="#12">12</a>  <em class="jxr_comment"> * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the</em>
<a class="jxr_linenumber" name="13" href="#13">13</a>  <em class="jxr_comment"> * License for the specific language governing permissions and limitations</em>
<a class="jxr_linenumber" name="14" href="#14">14</a>  <em class="jxr_comment"> * under the License.</em>
<a class="jxr_linenumber" name="15" href="#15">15</a>  <em class="jxr_comment"> */</em>
<a class="jxr_linenumber" name="16" href="#16">16</a>  <em class="jxr_comment">/*</em>
<a class="jxr_linenumber" name="17" href="#17">17</a>  <em class="jxr_comment">Copyright (c) 2000,2001,2002,2003 ymnk, JCraft,Inc. All rights reserved.</em>
<a class="jxr_linenumber" name="18" href="#18">18</a>  
<a class="jxr_linenumber" name="19" href="#19">19</a>  <em class="jxr_comment">Redistribution and use in source and binary forms, with or without</em>
<a class="jxr_linenumber" name="20" href="#20">20</a>  <em class="jxr_comment">modification, are permitted provided that the following conditions are met:</em>
<a class="jxr_linenumber" name="21" href="#21">21</a>  
<a class="jxr_linenumber" name="22" href="#22">22</a>  <em class="jxr_comment">  1. Redistributions of source code must retain the above copyright notice,</em>
<a class="jxr_linenumber" name="23" href="#23">23</a>  <em class="jxr_comment">     this list of conditions and the following disclaimer.</em>
<a class="jxr_linenumber" name="24" href="#24">24</a>  
<a class="jxr_linenumber" name="25" href="#25">25</a>  <em class="jxr_comment">  2. Redistributions in binary form must reproduce the above copyright</em>
<a class="jxr_linenumber" name="26" href="#26">26</a>  <em class="jxr_comment">     notice, this list of conditions and the following disclaimer in</em>
<a class="jxr_linenumber" name="27" href="#27">27</a>  <em class="jxr_comment">     the documentation and/or other materials provided with the distribution.</em>
<a class="jxr_linenumber" name="28" href="#28">28</a>  
<a class="jxr_linenumber" name="29" href="#29">29</a>  <em class="jxr_comment">  3. The names of the authors may not be used to endorse or promote products</em>
<a class="jxr_linenumber" name="30" href="#30">30</a>  <em class="jxr_comment">     derived from this software without specific prior written permission.</em>
<a class="jxr_linenumber" name="31" href="#31">31</a>  
<a class="jxr_linenumber" name="32" href="#32">32</a>  <em class="jxr_comment">THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,</em>
<a class="jxr_linenumber" name="33" href="#33">33</a>  <em class="jxr_comment">INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND</em>
<a class="jxr_linenumber" name="34" href="#34">34</a>  <em class="jxr_comment">FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,</em>
<a class="jxr_linenumber" name="35" href="#35">35</a>  <em class="jxr_comment">INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,</em>
<a class="jxr_linenumber" name="36" href="#36">36</a>  <em class="jxr_comment">INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT</em>
<a class="jxr_linenumber" name="37" href="#37">37</a>  <em class="jxr_comment">LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,</em>
<a class="jxr_linenumber" name="38" href="#38">38</a>  <em class="jxr_comment">OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF</em>
<a class="jxr_linenumber" name="39" href="#39">39</a>  <em class="jxr_comment">LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING</em>
<a class="jxr_linenumber" name="40" href="#40">40</a>  <em class="jxr_comment">NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,</em>
<a class="jxr_linenumber" name="41" href="#41">41</a>  <em class="jxr_comment">EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</em>
<a class="jxr_linenumber" name="42" href="#42">42</a>  <em class="jxr_comment"> */</em>
<a class="jxr_linenumber" name="43" href="#43">43</a>  <em class="jxr_comment">/*</em>
<a class="jxr_linenumber" name="44" href="#44">44</a>  <em class="jxr_comment"> * This program is based on zlib-1.1.3, so all credit should go authors</em>
<a class="jxr_linenumber" name="45" href="#45">45</a>  <em class="jxr_comment"> * Jean-loup Gailly(jloup@gzip.org) and Mark Adler(madler@alumni.caltech.edu)</em>
<a class="jxr_linenumber" name="46" href="#46">46</a>  <em class="jxr_comment"> * and contributors of zlib.</em>
<a class="jxr_linenumber" name="47" href="#47">47</a>  <em class="jxr_comment"> */</em>
<a class="jxr_linenumber" name="48" href="#48">48</a>  
<a class="jxr_linenumber" name="49" href="#49">49</a>  <strong class="jxr_keyword">package</strong> org.jboss.netty.util.internal.jzlib;
<a class="jxr_linenumber" name="50" href="#50">50</a>  
<a class="jxr_linenumber" name="51" href="#51">51</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.util.internal.jzlib.JZlib.WrapperType;
<a class="jxr_linenumber" name="52" href="#52">52</a>  
<a class="jxr_linenumber" name="53" href="#53">53</a>  <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../org/jboss/netty/util/internal/jzlib/Deflate.html">Deflate</a> {
<a class="jxr_linenumber" name="54" href="#54">54</a>  
<a class="jxr_linenumber" name="55" href="#55">55</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../org/jboss/netty/util/internal/jzlib/Deflate.html">Config</a> {
<a class="jxr_linenumber" name="56" href="#56">56</a>          <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> good_length; <em class="jxr_comment">// reduce lazy search above this match length</em>
<a class="jxr_linenumber" name="57" href="#57">57</a>          <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> max_lazy; <em class="jxr_comment">// do not perform lazy search above this match length</em>
<a class="jxr_linenumber" name="58" href="#58">58</a>          <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> nice_length; <em class="jxr_comment">// quit search above this match length</em>
<a class="jxr_linenumber" name="59" href="#59">59</a>          <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> max_chain;
<a class="jxr_linenumber" name="60" href="#60">60</a>          <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> func;
<a class="jxr_linenumber" name="61" href="#61">61</a>  
<a class="jxr_linenumber" name="62" href="#62">62</a>          <a href="../../../../../../org/jboss/netty/util/internal/jzlib/Deflate.html">Config</a>(<strong class="jxr_keyword">int</strong> good_length, <strong class="jxr_keyword">int</strong> max_lazy, <strong class="jxr_keyword">int</strong> nice_length, <strong class="jxr_keyword">int</strong> max_chain,
<a class="jxr_linenumber" name="63" href="#63">63</a>                  <strong class="jxr_keyword">int</strong> func) {
<a class="jxr_linenumber" name="64" href="#64">64</a>              <strong class="jxr_keyword">this</strong>.good_length = good_length;
<a class="jxr_linenumber" name="65" href="#65">65</a>              <strong class="jxr_keyword">this</strong>.max_lazy = max_lazy;
<a class="jxr_linenumber" name="66" href="#66">66</a>              <strong class="jxr_keyword">this</strong>.nice_length = nice_length;
<a class="jxr_linenumber" name="67" href="#67">67</a>              <strong class="jxr_keyword">this</strong>.max_chain = max_chain;
<a class="jxr_linenumber" name="68" href="#68">68</a>              <strong class="jxr_keyword">this</strong>.func = func;
<a class="jxr_linenumber" name="69" href="#69">69</a>          }
<a class="jxr_linenumber" name="70" href="#70">70</a>      }
<a class="jxr_linenumber" name="71" href="#71">71</a>  
<a class="jxr_linenumber" name="72" href="#72">72</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> STORED = 0;
<a class="jxr_linenumber" name="73" href="#73">73</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> FAST = 1;
<a class="jxr_linenumber" name="74" href="#74">74</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> SLOW = 2;
<a class="jxr_linenumber" name="75" href="#75">75</a>  
<a class="jxr_linenumber" name="76" href="#76">76</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <a href="../../../../../../org/jboss/netty/util/internal/jzlib/Deflate.html">Config</a>[] config_table;
<a class="jxr_linenumber" name="77" href="#77">77</a>      <strong class="jxr_keyword">static</strong> {
<a class="jxr_linenumber" name="78" href="#78">78</a>          config_table = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/jboss/netty/util/internal/jzlib/Deflate.html">Config</a>[10];
<a class="jxr_linenumber" name="79" href="#79">79</a>          config_table[0] = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/jboss/netty/util/internal/jzlib/Deflate.html">Config</a>(0, 0, 0, 0, STORED);
<a class="jxr_linenumber" name="80" href="#80">80</a>          config_table[1] = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/jboss/netty/util/internal/jzlib/Deflate.html">Config</a>(4, 4, 8, 4, FAST);
<a class="jxr_linenumber" name="81" href="#81">81</a>          config_table[2] = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/jboss/netty/util/internal/jzlib/Deflate.html">Config</a>(4, 5, 16, 8, FAST);
<a class="jxr_linenumber" name="82" href="#82">82</a>          config_table[3] = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/jboss/netty/util/internal/jzlib/Deflate.html">Config</a>(4, 6, 32, 32, FAST);
<a class="jxr_linenumber" name="83" href="#83">83</a>  
<a class="jxr_linenumber" name="84" href="#84">84</a>          config_table[4] = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/jboss/netty/util/internal/jzlib/Deflate.html">Config</a>(4, 4, 16, 16, SLOW);
<a class="jxr_linenumber" name="85" href="#85">85</a>          config_table[5] = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/jboss/netty/util/internal/jzlib/Deflate.html">Config</a>(8, 16, 32, 32, SLOW);
<a class="jxr_linenumber" name="86" href="#86">86</a>          config_table[6] = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/jboss/netty/util/internal/jzlib/Deflate.html">Config</a>(8, 16, 128, 128, SLOW);
<a class="jxr_linenumber" name="87" href="#87">87</a>          config_table[7] = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/jboss/netty/util/internal/jzlib/Deflate.html">Config</a>(8, 32, 128, 256, SLOW);
<a class="jxr_linenumber" name="88" href="#88">88</a>          config_table[8] = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/jboss/netty/util/internal/jzlib/Deflate.html">Config</a>(32, 128, 258, 1024, SLOW);
<a class="jxr_linenumber" name="89" href="#89">89</a>          config_table[9] = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/jboss/netty/util/internal/jzlib/Deflate.html">Config</a>(32, 258, 258, 4096, SLOW);
<a class="jxr_linenumber" name="90" href="#90">90</a>      }
<a class="jxr_linenumber" name="91" href="#91">91</a>  
<a class="jxr_linenumber" name="92" href="#92">92</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String[] z_errmsg = { <span class="jxr_string">"need dictionary"</span>, <em class="jxr_comment">// Z_NEED_DICT       2</em>
<a class="jxr_linenumber" name="93" href="#93">93</a>              <span class="jxr_string">"stream end"</span>, <em class="jxr_comment">// Z_STREAM_END      1</em>
<a class="jxr_linenumber" name="94" href="#94">94</a>              <span class="jxr_string">""</span>, <em class="jxr_comment">// Z_OK              0</em>
<a class="jxr_linenumber" name="95" href="#95">95</a>              <span class="jxr_string">"file error"</span>, <em class="jxr_comment">// Z_ERRNO         (-1)</em>
<a class="jxr_linenumber" name="96" href="#96">96</a>              <span class="jxr_string">"stream error"</span>, <em class="jxr_comment">// Z_STREAM_ERROR  (-2)</em>
<a class="jxr_linenumber" name="97" href="#97">97</a>              <span class="jxr_string">"data error"</span>, <em class="jxr_comment">// Z_DATA_ERROR    (-3)</em>
<a class="jxr_linenumber" name="98" href="#98">98</a>              <span class="jxr_string">"insufficient memory"</span>, <em class="jxr_comment">// Z_MEM_ERROR     (-4)</em>
<a class="jxr_linenumber" name="99" href="#99">99</a>              <span class="jxr_string">"buffer error"</span>, <em class="jxr_comment">// Z_BUF_ERROR     (-5)</em>
<a class="jxr_linenumber" name="100" href="#100">100</a>             <span class="jxr_string">"incompatible version"</span>,<em class="jxr_comment">// Z_VERSION_ERROR (-6)</em>
<a class="jxr_linenumber" name="101" href="#101">101</a>             <span class="jxr_string">""</span> };
<a class="jxr_linenumber" name="102" href="#102">102</a> 
<a class="jxr_linenumber" name="103" href="#103">103</a>     <em class="jxr_comment">// block not completed, need more input or more output</em>
<a class="jxr_linenumber" name="104" href="#104">104</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> NeedMore = 0;
<a class="jxr_linenumber" name="105" href="#105">105</a>     <em class="jxr_comment">// block flush performed</em>
<a class="jxr_linenumber" name="106" href="#106">106</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> BlockDone = 1;
<a class="jxr_linenumber" name="107" href="#107">107</a>     <em class="jxr_comment">// finish started, need only more output at next deflate</em>
<a class="jxr_linenumber" name="108" href="#108">108</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> FinishStarted = 2;
<a class="jxr_linenumber" name="109" href="#109">109</a>     <em class="jxr_comment">// finish done, accept no more input or output</em>
<a class="jxr_linenumber" name="110" href="#110">110</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> FinishDone = 3;
<a class="jxr_linenumber" name="111" href="#111">111</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> INIT_STATE = 42;
<a class="jxr_linenumber" name="112" href="#112">112</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> BUSY_STATE = 113;
<a class="jxr_linenumber" name="113" href="#113">113</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> FINISH_STATE = 666;
<a class="jxr_linenumber" name="114" href="#114">114</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> STORED_BLOCK = 0;
<a class="jxr_linenumber" name="115" href="#115">115</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> STATIC_TREES = 1;
<a class="jxr_linenumber" name="116" href="#116">116</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> DYN_TREES = 2;
<a class="jxr_linenumber" name="117" href="#117">117</a>     <em class="jxr_comment">// The three kinds of block type</em>
<a class="jxr_linenumber" name="118" href="#118">118</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> Z_BINARY = 0;
<a class="jxr_linenumber" name="119" href="#119">119</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> Z_ASCII = 1;
<a class="jxr_linenumber" name="120" href="#120">120</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> Z_UNKNOWN = 2;
<a class="jxr_linenumber" name="121" href="#121">121</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> Buf_size = 8 * 2;
<a class="jxr_linenumber" name="122" href="#122">122</a>     <em class="jxr_comment">// repeat previous bit length 3-6 times (2 bits of repeat count)</em>
<a class="jxr_linenumber" name="123" href="#123">123</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> REP_3_6 = 16;
<a class="jxr_linenumber" name="124" href="#124">124</a>     <em class="jxr_comment">// repeat a zero length 3-10 times  (3 bits of repeat count)</em>
<a class="jxr_linenumber" name="125" href="#125">125</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> REPZ_3_10 = 17;
<a class="jxr_linenumber" name="126" href="#126">126</a>     <em class="jxr_comment">// repeat a zero length 11-138 times  (7 bits of repeat count)</em>
<a class="jxr_linenumber" name="127" href="#127">127</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> REPZ_11_138 = 18;
<a class="jxr_linenumber" name="128" href="#128">128</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> MIN_MATCH = 3;
<a class="jxr_linenumber" name="129" href="#129">129</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> MAX_MATCH = 258;
<a class="jxr_linenumber" name="130" href="#130">130</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> MIN_LOOKAHEAD = MAX_MATCH + MIN_MATCH + 1;
<a class="jxr_linenumber" name="131" href="#131">131</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> END_BLOCK = 256;
<a class="jxr_linenumber" name="132" href="#132">132</a>     <a href="../../../../../../org/jboss/netty/util/internal/jzlib/ZStream.html">ZStream</a> strm; <em class="jxr_comment">// pointer back to this zlib stream</em>
<a class="jxr_linenumber" name="133" href="#133">133</a>     <strong class="jxr_keyword">int</strong> status; <em class="jxr_comment">// as the name implies</em>
<a class="jxr_linenumber" name="134" href="#134">134</a>     byte[] pending_buf; <em class="jxr_comment">// output still pending</em>
<a class="jxr_linenumber" name="135" href="#135">135</a>     <strong class="jxr_keyword">int</strong> pending_buf_size; <em class="jxr_comment">// size of pending_buf</em>
<a class="jxr_linenumber" name="136" href="#136">136</a>     <strong class="jxr_keyword">int</strong> pending_out; <em class="jxr_comment">// next pending byte to output to the stream</em>
<a class="jxr_linenumber" name="137" href="#137">137</a>     <strong class="jxr_keyword">int</strong> pending; <em class="jxr_comment">// nb of bytes in the pending buffer</em>
<a class="jxr_linenumber" name="138" href="#138">138</a>     <a href="../../../../../../org/jboss/netty/util/internal/jzlib/JZlib.html">WrapperType</a> wrapperType;
<a class="jxr_linenumber" name="139" href="#139">139</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> wroteTrailer;
<a class="jxr_linenumber" name="140" href="#140">140</a>     byte data_type; <em class="jxr_comment">// UNKNOWN, BINARY or ASCII</em>
<a class="jxr_linenumber" name="141" href="#141">141</a>     <strong class="jxr_keyword">int</strong> last_flush; <em class="jxr_comment">// value of flush param for previous deflate call</em>
<a class="jxr_linenumber" name="142" href="#142">142</a>     <strong class="jxr_keyword">int</strong> w_size; <em class="jxr_comment">// LZ77 window size (32K by default)</em>
<a class="jxr_linenumber" name="143" href="#143">143</a>     <strong class="jxr_keyword">int</strong> w_bits; <em class="jxr_comment">// log2(w_size)  (8..16)</em>
<a class="jxr_linenumber" name="144" href="#144">144</a>     <strong class="jxr_keyword">int</strong> w_mask; <em class="jxr_comment">// w_size - 1</em>
<a class="jxr_linenumber" name="145" href="#145">145</a>     byte[] window;
<a class="jxr_linenumber" name="146" href="#146">146</a>     <em class="jxr_comment">// Sliding window. Input bytes are read into the second half of the window,</em>
<a class="jxr_linenumber" name="147" href="#147">147</a>     <em class="jxr_comment">// and move to the first half later to keep a dictionary of at least wSize</em>
<a class="jxr_linenumber" name="148" href="#148">148</a>     <em class="jxr_comment">// bytes. With this organization, matches are limited to a distance of</em>
<a class="jxr_linenumber" name="149" href="#149">149</a>     <em class="jxr_comment">// wSize-MAX_MATCH bytes, but this ensures that IO is always</em>
<a class="jxr_linenumber" name="150" href="#150">150</a>     <em class="jxr_comment">// performed with a length multiple of the block size. Also, it limits</em>
<a class="jxr_linenumber" name="151" href="#151">151</a>     <em class="jxr_comment">// the window size to 64K, which is quite useful on MSDOS.</em>
<a class="jxr_linenumber" name="152" href="#152">152</a>     <em class="jxr_comment">// To do: use the user input buffer as sliding window.</em>
<a class="jxr_linenumber" name="153" href="#153">153</a>     <strong class="jxr_keyword">int</strong> window_size;
<a class="jxr_linenumber" name="154" href="#154">154</a>     <em class="jxr_comment">// Actual size of window: 2*wSize, except when the user input buffer</em>
<a class="jxr_linenumber" name="155" href="#155">155</a>     <em class="jxr_comment">// is directly used as sliding window.</em>
<a class="jxr_linenumber" name="156" href="#156">156</a>     <strong class="jxr_keyword">short</strong>[] prev;
<a class="jxr_linenumber" name="157" href="#157">157</a>     <em class="jxr_comment">// Link to older string with same hash index. To limit the size of this</em>
<a class="jxr_linenumber" name="158" href="#158">158</a>     <em class="jxr_comment">// array to 64K, this link is maintained only for the last 32K strings.</em>
<a class="jxr_linenumber" name="159" href="#159">159</a>     <em class="jxr_comment">// An index in this array is thus a window index modulo 32K.</em>
<a class="jxr_linenumber" name="160" href="#160">160</a>     <strong class="jxr_keyword">short</strong>[] head; <em class="jxr_comment">// Heads of the hash chains or NIL.</em>
<a class="jxr_linenumber" name="161" href="#161">161</a>     <strong class="jxr_keyword">int</strong> ins_h; <em class="jxr_comment">// hash index of string to be inserted</em>
<a class="jxr_linenumber" name="162" href="#162">162</a>     <strong class="jxr_keyword">int</strong> hash_size; <em class="jxr_comment">// number of elements in hash table</em>
<a class="jxr_linenumber" name="163" href="#163">163</a>     <strong class="jxr_keyword">int</strong> hash_bits; <em class="jxr_comment">// log2(hash_size)</em>
<a class="jxr_linenumber" name="164" href="#164">164</a>     <strong class="jxr_keyword">int</strong> hash_mask; <em class="jxr_comment">// hash_size-1</em>
<a class="jxr_linenumber" name="165" href="#165">165</a>     <em class="jxr_comment">// Number of bits by which ins_h must be shifted at each input</em>
<a class="jxr_linenumber" name="166" href="#166">166</a>     <em class="jxr_comment">// step. It must be such that after MIN_MATCH steps, the oldest</em>
<a class="jxr_linenumber" name="167" href="#167">167</a>     <em class="jxr_comment">// byte no longer takes part in the hash key, that is:</em>
<a class="jxr_linenumber" name="168" href="#168">168</a>     <em class="jxr_comment">// hash_shift * MIN_MATCH &gt;= hash_bits</em>
<a class="jxr_linenumber" name="169" href="#169">169</a>     <strong class="jxr_keyword">int</strong> hash_shift;
<a class="jxr_linenumber" name="170" href="#170">170</a>     <em class="jxr_comment">// Window position at the beginning of the current output block. Gets</em>
<a class="jxr_linenumber" name="171" href="#171">171</a>     <em class="jxr_comment">// negative when the window is moved backwards.</em>
<a class="jxr_linenumber" name="172" href="#172">172</a>     <strong class="jxr_keyword">int</strong> block_start;
<a class="jxr_linenumber" name="173" href="#173">173</a>     <strong class="jxr_keyword">int</strong> match_length; <em class="jxr_comment">// length of best match</em>
<a class="jxr_linenumber" name="174" href="#174">174</a>     <strong class="jxr_keyword">int</strong> prev_match; <em class="jxr_comment">// previous match</em>
<a class="jxr_linenumber" name="175" href="#175">175</a>     <strong class="jxr_keyword">int</strong> match_available; <em class="jxr_comment">// set if previous match exists</em>
<a class="jxr_linenumber" name="176" href="#176">176</a>     <strong class="jxr_keyword">int</strong> strstart; <em class="jxr_comment">// start of string to insert</em>
<a class="jxr_linenumber" name="177" href="#177">177</a>     <strong class="jxr_keyword">int</strong> match_start; <em class="jxr_comment">// start of matching string</em>
<a class="jxr_linenumber" name="178" href="#178">178</a>     <strong class="jxr_keyword">int</strong> lookahead; <em class="jxr_comment">// number of valid bytes ahead in window</em>
<a class="jxr_linenumber" name="179" href="#179">179</a>     <em class="jxr_comment">// Length of the best match at previous step. Matches not greater than this</em>
<a class="jxr_linenumber" name="180" href="#180">180</a>     <em class="jxr_comment">// are discarded. This is used in the lazy match evaluation.</em>
<a class="jxr_linenumber" name="181" href="#181">181</a>     <strong class="jxr_keyword">int</strong> prev_length;
<a class="jxr_linenumber" name="182" href="#182">182</a>     <em class="jxr_comment">// To speed up deflation, hash chains are never searched beyond this</em>
<a class="jxr_linenumber" name="183" href="#183">183</a>     <em class="jxr_comment">// length.  A higher limit improves compression ratio but degrades the speed.</em>
<a class="jxr_linenumber" name="184" href="#184">184</a>     <strong class="jxr_keyword">int</strong> max_chain_length;
<a class="jxr_linenumber" name="185" href="#185">185</a>     <em class="jxr_comment">// Attempt to find a better match only when the current match is strictly</em>
<a class="jxr_linenumber" name="186" href="#186">186</a>     <em class="jxr_comment">// smaller than this value. This mechanism is used only for compression</em>
<a class="jxr_linenumber" name="187" href="#187">187</a>     <em class="jxr_comment">// levels &gt;= 4.</em>
<a class="jxr_linenumber" name="188" href="#188">188</a>     <strong class="jxr_keyword">int</strong> max_lazy_match;
<a class="jxr_linenumber" name="189" href="#189">189</a>     <em class="jxr_comment">// Insert new strings in the hash table only if the match length is not</em>
<a class="jxr_linenumber" name="190" href="#190">190</a>     <em class="jxr_comment">// greater than this length. This saves time but degrades compression.</em>
<a class="jxr_linenumber" name="191" href="#191">191</a>     <em class="jxr_comment">// max_insert_length is used only for compression levels &lt;= 3.</em>
<a class="jxr_linenumber" name="192" href="#192">192</a>     <strong class="jxr_keyword">int</strong> level; <em class="jxr_comment">// compression level (1..9)</em>
<a class="jxr_linenumber" name="193" href="#193">193</a>     <strong class="jxr_keyword">int</strong> strategy; <em class="jxr_comment">// favor or force Huffman coding</em>
<a class="jxr_linenumber" name="194" href="#194">194</a>     <em class="jxr_comment">// Use a faster search when the previous match is longer than this</em>
<a class="jxr_linenumber" name="195" href="#195">195</a>     <strong class="jxr_keyword">int</strong> good_match;
<a class="jxr_linenumber" name="196" href="#196">196</a>     <em class="jxr_comment">// Stop searching when current match exceeds this</em>
<a class="jxr_linenumber" name="197" href="#197">197</a>     <strong class="jxr_keyword">int</strong> nice_match;
<a class="jxr_linenumber" name="198" href="#198">198</a>     <strong class="jxr_keyword">short</strong>[] dyn_ltree; <em class="jxr_comment">// literal and length tree</em>
<a class="jxr_linenumber" name="199" href="#199">199</a>     <strong class="jxr_keyword">short</strong>[] dyn_dtree; <em class="jxr_comment">// distance tree</em>
<a class="jxr_linenumber" name="200" href="#200">200</a>     <strong class="jxr_keyword">short</strong>[] bl_tree; <em class="jxr_comment">// Huffman tree for bit lengths</em>
<a class="jxr_linenumber" name="201" href="#201">201</a>     <a href="../../../../../../org/jboss/netty/util/internal/jzlib/Tree.html">Tree</a> l_desc = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/jboss/netty/util/internal/jzlib/Tree.html">Tree</a>(); <em class="jxr_comment">// desc for literal tree</em>
<a class="jxr_linenumber" name="202" href="#202">202</a>     <a href="../../../../../../org/jboss/netty/util/internal/jzlib/Tree.html">Tree</a> d_desc = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/jboss/netty/util/internal/jzlib/Tree.html">Tree</a>(); <em class="jxr_comment">// desc for distance tree</em>
<a class="jxr_linenumber" name="203" href="#203">203</a>     <a href="../../../../../../org/jboss/netty/util/internal/jzlib/Tree.html">Tree</a> bl_desc = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/jboss/netty/util/internal/jzlib/Tree.html">Tree</a>(); <em class="jxr_comment">// desc for bit length tree</em>
<a class="jxr_linenumber" name="204" href="#204">204</a>     <em class="jxr_comment">// number of codes at each bit length for an optimal tree</em>
<a class="jxr_linenumber" name="205" href="#205">205</a>     <strong class="jxr_keyword">short</strong>[] bl_count = <strong class="jxr_keyword">new</strong> <strong class="jxr_keyword">short</strong>[JZlib.MAX_BITS + 1];
<a class="jxr_linenumber" name="206" href="#206">206</a>     <em class="jxr_comment">// heap used to build the Huffman trees</em>
<a class="jxr_linenumber" name="207" href="#207">207</a>     <strong class="jxr_keyword">int</strong>[] heap = <strong class="jxr_keyword">new</strong> <strong class="jxr_keyword">int</strong>[2 * JZlib.L_CODES + 1];
<a class="jxr_linenumber" name="208" href="#208">208</a>     <strong class="jxr_keyword">int</strong> heap_len; <em class="jxr_comment">// number of elements in the heap</em>
<a class="jxr_linenumber" name="209" href="#209">209</a>     <strong class="jxr_keyword">int</strong> heap_max; <em class="jxr_comment">// element of largest frequency</em>
<a class="jxr_linenumber" name="210" href="#210">210</a>     <em class="jxr_comment">// The sons of heap[n] are heap[2*n] and heap[2*n+1]. heap[0] is not used.</em>
<a class="jxr_linenumber" name="211" href="#211">211</a>     <em class="jxr_comment">// The same heap array is used to build all trees.</em>
<a class="jxr_linenumber" name="212" href="#212">212</a>     <em class="jxr_comment">// Depth of each subtree used as tie breaker for trees of equal frequency</em>
<a class="jxr_linenumber" name="213" href="#213">213</a>     byte[] depth = <strong class="jxr_keyword">new</strong> byte[2 * JZlib.L_CODES + 1];
<a class="jxr_linenumber" name="214" href="#214">214</a>     <strong class="jxr_keyword">int</strong> l_buf; <em class="jxr_comment">// index for literals or lengths */</em>
<a class="jxr_linenumber" name="215" href="#215">215</a>     <em class="jxr_comment">// Size of match buffer for literals/lengths.  There are 4 reasons for</em>
<a class="jxr_linenumber" name="216" href="#216">216</a>     <em class="jxr_comment">// limiting lit_bufsize to 64K:</em>
<a class="jxr_linenumber" name="217" href="#217">217</a>     <em class="jxr_comment">//   - frequencies can be kept in 16 bit counters</em>
<a class="jxr_linenumber" name="218" href="#218">218</a>     <em class="jxr_comment">//   - if compression is not successful for the first block, all input</em>
<a class="jxr_linenumber" name="219" href="#219">219</a>     <em class="jxr_comment">//     data is still in the window so we can still emit a stored block even</em>
<a class="jxr_linenumber" name="220" href="#220">220</a>     <em class="jxr_comment">//     when input comes from standard input.  (This can also be done for</em>
<a class="jxr_linenumber" name="221" href="#221">221</a>     <em class="jxr_comment">//     all blocks if lit_bufsize is not greater than 32K.)</em>
<a class="jxr_linenumber" name="222" href="#222">222</a>     <em class="jxr_comment">//   - if compression is not successful for a file smaller than 64K, we can</em>
<a class="jxr_linenumber" name="223" href="#223">223</a>     <em class="jxr_comment">//     even emit a stored file instead of a stored block (saving 5 bytes).</em>
<a class="jxr_linenumber" name="224" href="#224">224</a>     <em class="jxr_comment">//     This is applicable only for zip (not gzip or zlib).</em>
<a class="jxr_linenumber" name="225" href="#225">225</a>     <em class="jxr_comment">//   - creating new Huffman trees less frequently may not provide fast</em>
<a class="jxr_linenumber" name="226" href="#226">226</a>     <em class="jxr_comment">//     adaptation to changes in the input data statistics. (Take for</em>
<a class="jxr_linenumber" name="227" href="#227">227</a>     <em class="jxr_comment">//     example a binary file with poorly compressible code followed by</em>
<a class="jxr_linenumber" name="228" href="#228">228</a>     <em class="jxr_comment">//     a highly compressible string table.) Smaller buffer sizes give</em>
<a class="jxr_linenumber" name="229" href="#229">229</a>     <em class="jxr_comment">//     fast adaptation but have of course the overhead of transmitting</em>
<a class="jxr_linenumber" name="230" href="#230">230</a>     <em class="jxr_comment">//     trees more frequently.</em>
<a class="jxr_linenumber" name="231" href="#231">231</a>     <em class="jxr_comment">//   - I can't count above 4</em>
<a class="jxr_linenumber" name="232" href="#232">232</a>     <strong class="jxr_keyword">int</strong> lit_bufsize;
<a class="jxr_linenumber" name="233" href="#233">233</a>     <strong class="jxr_keyword">int</strong> last_lit; <em class="jxr_comment">// running index in l_buf</em>
<a class="jxr_linenumber" name="234" href="#234">234</a>     <em class="jxr_comment">// Buffer for distances. To simplify the code, d_buf and l_buf have</em>
<a class="jxr_linenumber" name="235" href="#235">235</a>     <em class="jxr_comment">// the same number of elements. To use different lengths, an extra flag</em>
<a class="jxr_linenumber" name="236" href="#236">236</a>     <em class="jxr_comment">// array would be necessary.</em>
<a class="jxr_linenumber" name="237" href="#237">237</a>     <strong class="jxr_keyword">int</strong> d_buf; <em class="jxr_comment">// index of pendig_buf</em>
<a class="jxr_linenumber" name="238" href="#238">238</a>     <strong class="jxr_keyword">int</strong> opt_len; <em class="jxr_comment">// bit length of current block with optimal trees</em>
<a class="jxr_linenumber" name="239" href="#239">239</a>     <strong class="jxr_keyword">int</strong> <strong class="jxr_keyword">static</strong>_len; <em class="jxr_comment">// bit length of current block with static trees</em>
<a class="jxr_linenumber" name="240" href="#240">240</a>     <strong class="jxr_keyword">int</strong> matches; <em class="jxr_comment">// number of string matches in current block</em>
<a class="jxr_linenumber" name="241" href="#241">241</a>     <strong class="jxr_keyword">int</strong> last_eob_len; <em class="jxr_comment">// bit length of EOB code for last block</em>
<a class="jxr_linenumber" name="242" href="#242">242</a>     <em class="jxr_comment">// Output buffer. bits are inserted starting at the bottom (least</em>
<a class="jxr_linenumber" name="243" href="#243">243</a>     <em class="jxr_comment">// significant bits).</em>
<a class="jxr_linenumber" name="244" href="#244">244</a>     <strong class="jxr_keyword">short</strong> bi_buf;
<a class="jxr_linenumber" name="245" href="#245">245</a>     <em class="jxr_comment">// Number of valid bits in bi_buf.  All bits above the last valid bit</em>
<a class="jxr_linenumber" name="246" href="#246">246</a>     <em class="jxr_comment">// are always zero.</em>
<a class="jxr_linenumber" name="247" href="#247">247</a>     <strong class="jxr_keyword">int</strong> bi_valid;
<a class="jxr_linenumber" name="248" href="#248">248</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> gzipUncompressedBytes;
<a class="jxr_linenumber" name="249" href="#249">249</a> 
<a class="jxr_linenumber" name="250" href="#250">250</a>     <a href="../../../../../../org/jboss/netty/util/internal/jzlib/Deflate.html">Deflate</a>() {
<a class="jxr_linenumber" name="251" href="#251">251</a>         dyn_ltree = <strong class="jxr_keyword">new</strong> <strong class="jxr_keyword">short</strong>[JZlib.HEAP_SIZE * 2];
<a class="jxr_linenumber" name="252" href="#252">252</a>         dyn_dtree = <strong class="jxr_keyword">new</strong> <strong class="jxr_keyword">short</strong>[(2 * JZlib.D_CODES + 1) * 2]; <em class="jxr_comment">// distance tree</em>
<a class="jxr_linenumber" name="253" href="#253">253</a>         bl_tree = <strong class="jxr_keyword">new</strong> <strong class="jxr_keyword">short</strong>[(2 * JZlib.BL_CODES + 1) * 2]; <em class="jxr_comment">// Huffman tree for bit lengths</em>
<a class="jxr_linenumber" name="254" href="#254">254</a>     }
<a class="jxr_linenumber" name="255" href="#255">255</a> 
<a class="jxr_linenumber" name="256" href="#256">256</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> lm_init() {
<a class="jxr_linenumber" name="257" href="#257">257</a>         window_size = 2 * w_size;
<a class="jxr_linenumber" name="258" href="#258">258</a> 
<a class="jxr_linenumber" name="259" href="#259">259</a>         <em class="jxr_comment">// Set the default configuration parameters:</em>
<a class="jxr_linenumber" name="260" href="#260">260</a>         max_lazy_match = Deflate.config_table[level].max_lazy;
<a class="jxr_linenumber" name="261" href="#261">261</a>         good_match = Deflate.config_table[level].good_length;
<a class="jxr_linenumber" name="262" href="#262">262</a>         nice_match = Deflate.config_table[level].nice_length;
<a class="jxr_linenumber" name="263" href="#263">263</a>         max_chain_length = Deflate.config_table[level].max_chain;
<a class="jxr_linenumber" name="264" href="#264">264</a> 
<a class="jxr_linenumber" name="265" href="#265">265</a>         strstart = 0;
<a class="jxr_linenumber" name="266" href="#266">266</a>         block_start = 0;
<a class="jxr_linenumber" name="267" href="#267">267</a>         lookahead = 0;
<a class="jxr_linenumber" name="268" href="#268">268</a>         match_length = prev_length = MIN_MATCH - 1;
<a class="jxr_linenumber" name="269" href="#269">269</a>         match_available = 0;
<a class="jxr_linenumber" name="270" href="#270">270</a>         ins_h = 0;
<a class="jxr_linenumber" name="271" href="#271">271</a>     }
<a class="jxr_linenumber" name="272" href="#272">272</a> 
<a class="jxr_linenumber" name="273" href="#273">273</a>     <em class="jxr_comment">// Initialize the tree data structures for a new zlib stream.</em>
<a class="jxr_linenumber" name="274" href="#274">274</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> tr_init() {
<a class="jxr_linenumber" name="275" href="#275">275</a> 
<a class="jxr_linenumber" name="276" href="#276">276</a>         l_desc.dyn_tree = dyn_ltree;
<a class="jxr_linenumber" name="277" href="#277">277</a>         l_desc.stat_desc = StaticTree.<strong class="jxr_keyword">static</strong>_l_desc;
<a class="jxr_linenumber" name="278" href="#278">278</a> 
<a class="jxr_linenumber" name="279" href="#279">279</a>         d_desc.dyn_tree = dyn_dtree;
<a class="jxr_linenumber" name="280" href="#280">280</a>         d_desc.stat_desc = StaticTree.<strong class="jxr_keyword">static</strong>_d_desc;
<a class="jxr_linenumber" name="281" href="#281">281</a> 
<a class="jxr_linenumber" name="282" href="#282">282</a>         bl_desc.dyn_tree = bl_tree;
<a class="jxr_linenumber" name="283" href="#283">283</a>         bl_desc.stat_desc = StaticTree.<strong class="jxr_keyword">static</strong>_bl_desc;
<a class="jxr_linenumber" name="284" href="#284">284</a> 
<a class="jxr_linenumber" name="285" href="#285">285</a>         bi_buf = 0;
<a class="jxr_linenumber" name="286" href="#286">286</a>         bi_valid = 0;
<a class="jxr_linenumber" name="287" href="#287">287</a>         last_eob_len = 8; <em class="jxr_comment">// enough lookahead for inflate</em>
<a class="jxr_linenumber" name="288" href="#288">288</a> 
<a class="jxr_linenumber" name="289" href="#289">289</a>         <em class="jxr_comment">// Initialize the first block of the first file:</em>
<a class="jxr_linenumber" name="290" href="#290">290</a>         init_block();
<a class="jxr_linenumber" name="291" href="#291">291</a>     }
<a class="jxr_linenumber" name="292" href="#292">292</a> 
<a class="jxr_linenumber" name="293" href="#293">293</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> init_block() {
<a class="jxr_linenumber" name="294" href="#294">294</a>         <em class="jxr_comment">// Initialize the trees.</em>
<a class="jxr_linenumber" name="295" href="#295">295</a>         <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; JZlib.L_CODES; i ++) {
<a class="jxr_linenumber" name="296" href="#296">296</a>             dyn_ltree[i * 2] = 0;
<a class="jxr_linenumber" name="297" href="#297">297</a>         }
<a class="jxr_linenumber" name="298" href="#298">298</a>         <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; JZlib.D_CODES; i ++) {
<a class="jxr_linenumber" name="299" href="#299">299</a>             dyn_dtree[i * 2] = 0;
<a class="jxr_linenumber" name="300" href="#300">300</a>         }
<a class="jxr_linenumber" name="301" href="#301">301</a>         <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; JZlib.BL_CODES; i ++) {
<a class="jxr_linenumber" name="302" href="#302">302</a>             bl_tree[i * 2] = 0;
<a class="jxr_linenumber" name="303" href="#303">303</a>         }
<a class="jxr_linenumber" name="304" href="#304">304</a> 
<a class="jxr_linenumber" name="305" href="#305">305</a>         dyn_ltree[END_BLOCK * 2] = 1;
<a class="jxr_linenumber" name="306" href="#306">306</a>         opt_len = <strong class="jxr_keyword">static</strong>_len = 0;
<a class="jxr_linenumber" name="307" href="#307">307</a>         last_lit = matches = 0;
<a class="jxr_linenumber" name="308" href="#308">308</a>     }
<a class="jxr_linenumber" name="309" href="#309">309</a> 
<a class="jxr_linenumber" name="310" href="#310">310</a>     <em class="jxr_comment">// Restore the heap property by moving down the tree starting at node k,</em>
<a class="jxr_linenumber" name="311" href="#311">311</a>     <em class="jxr_comment">// exchanging a node with the smallest of its two sons if necessary, stopping</em>
<a class="jxr_linenumber" name="312" href="#312">312</a>     <em class="jxr_comment">// when the heap property is re-established (each father smaller than its</em>
<a class="jxr_linenumber" name="313" href="#313">313</a>     <em class="jxr_comment">// two sons).</em>
<a class="jxr_linenumber" name="314" href="#314">314</a>     <strong class="jxr_keyword">void</strong> pqdownheap(<strong class="jxr_keyword">short</strong>[] tree, <em class="jxr_comment">// the tree to restore</em>
<a class="jxr_linenumber" name="315" href="#315">315</a>             <strong class="jxr_keyword">int</strong> k <em class="jxr_comment">// node to move down</em>
<a class="jxr_linenumber" name="316" href="#316">316</a>     ) {
<a class="jxr_linenumber" name="317" href="#317">317</a>         <strong class="jxr_keyword">int</strong> v = heap[k];
<a class="jxr_linenumber" name="318" href="#318">318</a>         <strong class="jxr_keyword">int</strong> j = k &lt;&lt; 1; <em class="jxr_comment">// left son of k</em>
<a class="jxr_linenumber" name="319" href="#319">319</a>         <strong class="jxr_keyword">while</strong> (j &lt;= heap_len) {
<a class="jxr_linenumber" name="320" href="#320">320</a>             <em class="jxr_comment">// Set j to the smallest of the two sons:</em>
<a class="jxr_linenumber" name="321" href="#321">321</a>             <strong class="jxr_keyword">if</strong> (j &lt; heap_len &amp;&amp; smaller(tree, heap[j + 1], heap[j], depth)) {
<a class="jxr_linenumber" name="322" href="#322">322</a>                 j ++;
<a class="jxr_linenumber" name="323" href="#323">323</a>             }
<a class="jxr_linenumber" name="324" href="#324">324</a>             <em class="jxr_comment">// Exit if v is smaller than both sons</em>
<a class="jxr_linenumber" name="325" href="#325">325</a>             <strong class="jxr_keyword">if</strong> (smaller(tree, v, heap[j], depth)) {
<a class="jxr_linenumber" name="326" href="#326">326</a>                 <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="327" href="#327">327</a>             }
<a class="jxr_linenumber" name="328" href="#328">328</a> 
<a class="jxr_linenumber" name="329" href="#329">329</a>             <em class="jxr_comment">// Exchange v with the smallest son</em>
<a class="jxr_linenumber" name="330" href="#330">330</a>             heap[k] = heap[j];
<a class="jxr_linenumber" name="331" href="#331">331</a>             k = j;
<a class="jxr_linenumber" name="332" href="#332">332</a>             <em class="jxr_comment">// And continue down the tree, setting j to the left son of k</em>
<a class="jxr_linenumber" name="333" href="#333">333</a>             j &lt;&lt;= 1;
<a class="jxr_linenumber" name="334" href="#334">334</a>         }
<a class="jxr_linenumber" name="335" href="#335">335</a>         heap[k] = v;
<a class="jxr_linenumber" name="336" href="#336">336</a>     }
<a class="jxr_linenumber" name="337" href="#337">337</a> 
<a class="jxr_linenumber" name="338" href="#338">338</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">boolean</strong> smaller(<strong class="jxr_keyword">short</strong>[] tree, <strong class="jxr_keyword">int</strong> n, <strong class="jxr_keyword">int</strong> m, byte[] depth) {
<a class="jxr_linenumber" name="339" href="#339">339</a>         <strong class="jxr_keyword">short</strong> tn2 = tree[n * 2];
<a class="jxr_linenumber" name="340" href="#340">340</a>         <strong class="jxr_keyword">short</strong> tm2 = tree[m * 2];
<a class="jxr_linenumber" name="341" href="#341">341</a>         <strong class="jxr_keyword">return</strong> tn2 &lt; tm2 || tn2 == tm2 &amp;&amp; depth[n] &lt;= depth[m];
<a class="jxr_linenumber" name="342" href="#342">342</a>     }
<a class="jxr_linenumber" name="343" href="#343">343</a> 
<a class="jxr_linenumber" name="344" href="#344">344</a>     <em class="jxr_comment">// Scan a literal or distance tree to determine the frequencies of the codes</em>
<a class="jxr_linenumber" name="345" href="#345">345</a>     <em class="jxr_comment">// in the bit length tree.</em>
<a class="jxr_linenumber" name="346" href="#346">346</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> scan_tree(<strong class="jxr_keyword">short</strong>[] tree,<em class="jxr_comment">// the tree to be scanned</em>
<a class="jxr_linenumber" name="347" href="#347">347</a>             <strong class="jxr_keyword">int</strong> max_code <em class="jxr_comment">// and its largest code of non zero frequency</em>
<a class="jxr_linenumber" name="348" href="#348">348</a>     ) {
<a class="jxr_linenumber" name="349" href="#349">349</a>         <strong class="jxr_keyword">int</strong> n; <em class="jxr_comment">// iterates over all tree elements</em>
<a class="jxr_linenumber" name="350" href="#350">350</a>         <strong class="jxr_keyword">int</strong> prevlen = -1; <em class="jxr_comment">// last emitted length</em>
<a class="jxr_linenumber" name="351" href="#351">351</a>         <strong class="jxr_keyword">int</strong> curlen; <em class="jxr_comment">// length of current code</em>
<a class="jxr_linenumber" name="352" href="#352">352</a>         <strong class="jxr_keyword">int</strong> nextlen = tree[0 * 2 + 1]; <em class="jxr_comment">// length of next code</em>
<a class="jxr_linenumber" name="353" href="#353">353</a>         <strong class="jxr_keyword">int</strong> count = 0; <em class="jxr_comment">// repeat count of the current code</em>
<a class="jxr_linenumber" name="354" href="#354">354</a>         <strong class="jxr_keyword">int</strong> max_count = 7; <em class="jxr_comment">// max repeat count</em>
<a class="jxr_linenumber" name="355" href="#355">355</a>         <strong class="jxr_keyword">int</strong> min_count = 4; <em class="jxr_comment">// min repeat count</em>
<a class="jxr_linenumber" name="356" href="#356">356</a> 
<a class="jxr_linenumber" name="357" href="#357">357</a>         <strong class="jxr_keyword">if</strong> (nextlen == 0) {
<a class="jxr_linenumber" name="358" href="#358">358</a>             max_count = 138;
<a class="jxr_linenumber" name="359" href="#359">359</a>             min_count = 3;
<a class="jxr_linenumber" name="360" href="#360">360</a>         }
<a class="jxr_linenumber" name="361" href="#361">361</a>         tree[(max_code + 1) * 2 + 1] = (<strong class="jxr_keyword">short</strong>) 0xffff; <em class="jxr_comment">// guard</em>
<a class="jxr_linenumber" name="362" href="#362">362</a> 
<a class="jxr_linenumber" name="363" href="#363">363</a>         <strong class="jxr_keyword">for</strong> (n = 0; n &lt;= max_code; n ++) {
<a class="jxr_linenumber" name="364" href="#364">364</a>             curlen = nextlen;
<a class="jxr_linenumber" name="365" href="#365">365</a>             nextlen = tree[(n + 1) * 2 + 1];
<a class="jxr_linenumber" name="366" href="#366">366</a>             <strong class="jxr_keyword">if</strong> (++ count &lt; max_count &amp;&amp; curlen == nextlen) {
<a class="jxr_linenumber" name="367" href="#367">367</a>                 <strong class="jxr_keyword">continue</strong>;
<a class="jxr_linenumber" name="368" href="#368">368</a>             } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (count &lt; min_count) {
<a class="jxr_linenumber" name="369" href="#369">369</a>                 bl_tree[curlen * 2] += count;
<a class="jxr_linenumber" name="370" href="#370">370</a>             } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (curlen != 0) {
<a class="jxr_linenumber" name="371" href="#371">371</a>                 <strong class="jxr_keyword">if</strong> (curlen != prevlen) {
<a class="jxr_linenumber" name="372" href="#372">372</a>                     bl_tree[curlen * 2] ++;
<a class="jxr_linenumber" name="373" href="#373">373</a>                 }
<a class="jxr_linenumber" name="374" href="#374">374</a>                 bl_tree[REP_3_6 * 2] ++;
<a class="jxr_linenumber" name="375" href="#375">375</a>             } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (count &lt;= 10) {
<a class="jxr_linenumber" name="376" href="#376">376</a>                 bl_tree[REPZ_3_10 * 2] ++;
<a class="jxr_linenumber" name="377" href="#377">377</a>             } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="378" href="#378">378</a>                 bl_tree[REPZ_11_138 * 2] ++;
<a class="jxr_linenumber" name="379" href="#379">379</a>             }
<a class="jxr_linenumber" name="380" href="#380">380</a>             count = 0;
<a class="jxr_linenumber" name="381" href="#381">381</a>             prevlen = curlen;
<a class="jxr_linenumber" name="382" href="#382">382</a>             <strong class="jxr_keyword">if</strong> (nextlen == 0) {
<a class="jxr_linenumber" name="383" href="#383">383</a>                 max_count = 138;
<a class="jxr_linenumber" name="384" href="#384">384</a>                 min_count = 3;
<a class="jxr_linenumber" name="385" href="#385">385</a>             } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (curlen == nextlen) {
<a class="jxr_linenumber" name="386" href="#386">386</a>                 max_count = 6;
<a class="jxr_linenumber" name="387" href="#387">387</a>                 min_count = 3;
<a class="jxr_linenumber" name="388" href="#388">388</a>             } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="389" href="#389">389</a>                 max_count = 7;
<a class="jxr_linenumber" name="390" href="#390">390</a>                 min_count = 4;
<a class="jxr_linenumber" name="391" href="#391">391</a>             }
<a class="jxr_linenumber" name="392" href="#392">392</a>         }
<a class="jxr_linenumber" name="393" href="#393">393</a>     }
<a class="jxr_linenumber" name="394" href="#394">394</a> 
<a class="jxr_linenumber" name="395" href="#395">395</a>     <em class="jxr_comment">// Construct the Huffman tree for the bit lengths and return the index in</em>
<a class="jxr_linenumber" name="396" href="#396">396</a>     <em class="jxr_comment">// bl_order of the last bit length code to send.</em>
<a class="jxr_linenumber" name="397" href="#397">397</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> build_bl_tree() {
<a class="jxr_linenumber" name="398" href="#398">398</a>         <strong class="jxr_keyword">int</strong> max_blindex; <em class="jxr_comment">// index of last bit length code of non zero freq</em>
<a class="jxr_linenumber" name="399" href="#399">399</a> 
<a class="jxr_linenumber" name="400" href="#400">400</a>         <em class="jxr_comment">// Determine the bit length frequencies for literal and distance trees</em>
<a class="jxr_linenumber" name="401" href="#401">401</a>         scan_tree(dyn_ltree, l_desc.max_code);
<a class="jxr_linenumber" name="402" href="#402">402</a>         scan_tree(dyn_dtree, d_desc.max_code);
<a class="jxr_linenumber" name="403" href="#403">403</a> 
<a class="jxr_linenumber" name="404" href="#404">404</a>         <em class="jxr_comment">// Build the bit length tree:</em>
<a class="jxr_linenumber" name="405" href="#405">405</a>         bl_desc.build_tree(<strong class="jxr_keyword">this</strong>);
<a class="jxr_linenumber" name="406" href="#406">406</a>         <em class="jxr_comment">// opt_len now includes the length of the tree representations, except</em>
<a class="jxr_linenumber" name="407" href="#407">407</a>         <em class="jxr_comment">// the lengths of the bit lengths codes and the 5+5+4 bits for the counts.</em>
<a class="jxr_linenumber" name="408" href="#408">408</a> 
<a class="jxr_linenumber" name="409" href="#409">409</a>         <em class="jxr_comment">// Determine the number of bit length codes to send. The pkzip format</em>
<a class="jxr_linenumber" name="410" href="#410">410</a>         <em class="jxr_comment">// requires that at least 4 bit length codes be sent. (appnote.txt says</em>
<a class="jxr_linenumber" name="411" href="#411">411</a>         <em class="jxr_comment">// 3 but the actual value used is 4.)</em>
<a class="jxr_linenumber" name="412" href="#412">412</a>         <strong class="jxr_keyword">for</strong> (max_blindex = JZlib.BL_CODES - 1; max_blindex &gt;= 3; max_blindex --) {
<a class="jxr_linenumber" name="413" href="#413">413</a>             <strong class="jxr_keyword">if</strong> (bl_tree[Tree.bl_order[max_blindex] * 2 + 1] != 0) {
<a class="jxr_linenumber" name="414" href="#414">414</a>                 <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="415" href="#415">415</a>             }
<a class="jxr_linenumber" name="416" href="#416">416</a>         }
<a class="jxr_linenumber" name="417" href="#417">417</a>         <em class="jxr_comment">// Update opt_len to include the bit length tree and counts</em>
<a class="jxr_linenumber" name="418" href="#418">418</a>         opt_len += 3 * (max_blindex + 1) + 5 + 5 + 4;
<a class="jxr_linenumber" name="419" href="#419">419</a> 
<a class="jxr_linenumber" name="420" href="#420">420</a>         <strong class="jxr_keyword">return</strong> max_blindex;
<a class="jxr_linenumber" name="421" href="#421">421</a>     }
<a class="jxr_linenumber" name="422" href="#422">422</a> 
<a class="jxr_linenumber" name="423" href="#423">423</a>     <em class="jxr_comment">// Send the header for a block using dynamic Huffman trees: the counts, the</em>
<a class="jxr_linenumber" name="424" href="#424">424</a>     <em class="jxr_comment">// lengths of the bit length codes, the literal tree and the distance tree.</em>
<a class="jxr_linenumber" name="425" href="#425">425</a>     <em class="jxr_comment">// IN assertion: lcodes &gt;= 257, dcodes &gt;= 1, blcodes &gt;= 4.</em>
<a class="jxr_linenumber" name="426" href="#426">426</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> send_all_trees(<strong class="jxr_keyword">int</strong> lcodes, <strong class="jxr_keyword">int</strong> dcodes, <strong class="jxr_keyword">int</strong> blcodes) {
<a class="jxr_linenumber" name="427" href="#427">427</a>         <strong class="jxr_keyword">int</strong> rank; <em class="jxr_comment">// index in bl_order</em>
<a class="jxr_linenumber" name="428" href="#428">428</a> 
<a class="jxr_linenumber" name="429" href="#429">429</a>         send_bits(lcodes - 257, 5); <em class="jxr_comment">// not +255 as stated in appnote.txt</em>
<a class="jxr_linenumber" name="430" href="#430">430</a>         send_bits(dcodes - 1, 5);
<a class="jxr_linenumber" name="431" href="#431">431</a>         send_bits(blcodes - 4, 4); <em class="jxr_comment">// not -3 as stated in appnote.txt</em>
<a class="jxr_linenumber" name="432" href="#432">432</a>         <strong class="jxr_keyword">for</strong> (rank = 0; rank &lt; blcodes; rank ++) {
<a class="jxr_linenumber" name="433" href="#433">433</a>             send_bits(bl_tree[Tree.bl_order[rank] * 2 + 1], 3);
<a class="jxr_linenumber" name="434" href="#434">434</a>         }
<a class="jxr_linenumber" name="435" href="#435">435</a>         send_tree(dyn_ltree, lcodes - 1); <em class="jxr_comment">// literal tree</em>
<a class="jxr_linenumber" name="436" href="#436">436</a>         send_tree(dyn_dtree, dcodes - 1); <em class="jxr_comment">// distance tree</em>
<a class="jxr_linenumber" name="437" href="#437">437</a>     }
<a class="jxr_linenumber" name="438" href="#438">438</a> 
<a class="jxr_linenumber" name="439" href="#439">439</a>     <em class="jxr_comment">// Send a literal or distance tree in compressed form, using the codes in</em>
<a class="jxr_linenumber" name="440" href="#440">440</a>     <em class="jxr_comment">// bl_tree.</em>
<a class="jxr_linenumber" name="441" href="#441">441</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> send_tree(<strong class="jxr_keyword">short</strong>[] tree,<em class="jxr_comment">// the tree to be sent</em>
<a class="jxr_linenumber" name="442" href="#442">442</a>             <strong class="jxr_keyword">int</strong> max_code <em class="jxr_comment">// and its largest code of non zero frequency</em>
<a class="jxr_linenumber" name="443" href="#443">443</a>     ) {
<a class="jxr_linenumber" name="444" href="#444">444</a>         <strong class="jxr_keyword">int</strong> n; <em class="jxr_comment">// iterates over all tree elements</em>
<a class="jxr_linenumber" name="445" href="#445">445</a>         <strong class="jxr_keyword">int</strong> prevlen = -1; <em class="jxr_comment">// last emitted length</em>
<a class="jxr_linenumber" name="446" href="#446">446</a>         <strong class="jxr_keyword">int</strong> curlen; <em class="jxr_comment">// length of current code</em>
<a class="jxr_linenumber" name="447" href="#447">447</a>         <strong class="jxr_keyword">int</strong> nextlen = tree[0 * 2 + 1]; <em class="jxr_comment">// length of next code</em>
<a class="jxr_linenumber" name="448" href="#448">448</a>         <strong class="jxr_keyword">int</strong> count = 0; <em class="jxr_comment">// repeat count of the current code</em>
<a class="jxr_linenumber" name="449" href="#449">449</a>         <strong class="jxr_keyword">int</strong> max_count = 7; <em class="jxr_comment">// max repeat count</em>
<a class="jxr_linenumber" name="450" href="#450">450</a>         <strong class="jxr_keyword">int</strong> min_count = 4; <em class="jxr_comment">// min repeat count</em>
<a class="jxr_linenumber" name="451" href="#451">451</a> 
<a class="jxr_linenumber" name="452" href="#452">452</a>         <strong class="jxr_keyword">if</strong> (nextlen == 0) {
<a class="jxr_linenumber" name="453" href="#453">453</a>             max_count = 138;
<a class="jxr_linenumber" name="454" href="#454">454</a>             min_count = 3;
<a class="jxr_linenumber" name="455" href="#455">455</a>         }
<a class="jxr_linenumber" name="456" href="#456">456</a> 
<a class="jxr_linenumber" name="457" href="#457">457</a>         <strong class="jxr_keyword">for</strong> (n = 0; n &lt;= max_code; n ++) {
<a class="jxr_linenumber" name="458" href="#458">458</a>             curlen = nextlen;
<a class="jxr_linenumber" name="459" href="#459">459</a>             nextlen = tree[(n + 1) * 2 + 1];
<a class="jxr_linenumber" name="460" href="#460">460</a>             <strong class="jxr_keyword">if</strong> (++ count &lt; max_count &amp;&amp; curlen == nextlen) {
<a class="jxr_linenumber" name="461" href="#461">461</a>                 <strong class="jxr_keyword">continue</strong>;
<a class="jxr_linenumber" name="462" href="#462">462</a>             } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (count &lt; min_count) {
<a class="jxr_linenumber" name="463" href="#463">463</a>                 <strong class="jxr_keyword">do</strong> {
<a class="jxr_linenumber" name="464" href="#464">464</a>                     send_code(curlen, bl_tree);
<a class="jxr_linenumber" name="465" href="#465">465</a>                 } <strong class="jxr_keyword">while</strong> (-- count != 0);
<a class="jxr_linenumber" name="466" href="#466">466</a>             } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (curlen != 0) {
<a class="jxr_linenumber" name="467" href="#467">467</a>                 <strong class="jxr_keyword">if</strong> (curlen != prevlen) {
<a class="jxr_linenumber" name="468" href="#468">468</a>                     send_code(curlen, bl_tree);
<a class="jxr_linenumber" name="469" href="#469">469</a>                     count --;
<a class="jxr_linenumber" name="470" href="#470">470</a>                 }
<a class="jxr_linenumber" name="471" href="#471">471</a>                 send_code(REP_3_6, bl_tree);
<a class="jxr_linenumber" name="472" href="#472">472</a>                 send_bits(count - 3, 2);
<a class="jxr_linenumber" name="473" href="#473">473</a>             } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (count &lt;= 10) {
<a class="jxr_linenumber" name="474" href="#474">474</a>                 send_code(REPZ_3_10, bl_tree);
<a class="jxr_linenumber" name="475" href="#475">475</a>                 send_bits(count - 3, 3);
<a class="jxr_linenumber" name="476" href="#476">476</a>             } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="477" href="#477">477</a>                 send_code(REPZ_11_138, bl_tree);
<a class="jxr_linenumber" name="478" href="#478">478</a>                 send_bits(count - 11, 7);
<a class="jxr_linenumber" name="479" href="#479">479</a>             }
<a class="jxr_linenumber" name="480" href="#480">480</a>             count = 0;
<a class="jxr_linenumber" name="481" href="#481">481</a>             prevlen = curlen;
<a class="jxr_linenumber" name="482" href="#482">482</a>             <strong class="jxr_keyword">if</strong> (nextlen == 0) {
<a class="jxr_linenumber" name="483" href="#483">483</a>                 max_count = 138;
<a class="jxr_linenumber" name="484" href="#484">484</a>                 min_count = 3;
<a class="jxr_linenumber" name="485" href="#485">485</a>             } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (curlen == nextlen) {
<a class="jxr_linenumber" name="486" href="#486">486</a>                 max_count = 6;
<a class="jxr_linenumber" name="487" href="#487">487</a>                 min_count = 3;
<a class="jxr_linenumber" name="488" href="#488">488</a>             } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="489" href="#489">489</a>                 max_count = 7;
<a class="jxr_linenumber" name="490" href="#490">490</a>                 min_count = 4;
<a class="jxr_linenumber" name="491" href="#491">491</a>             }
<a class="jxr_linenumber" name="492" href="#492">492</a>         }
<a class="jxr_linenumber" name="493" href="#493">493</a>     }
<a class="jxr_linenumber" name="494" href="#494">494</a> 
<a class="jxr_linenumber" name="495" href="#495">495</a>     <em class="jxr_comment">// Output a byte on the stream.</em>
<a class="jxr_linenumber" name="496" href="#496">496</a>     <em class="jxr_comment">// IN assertion: there is enough room in pending_buf.</em>
<a class="jxr_linenumber" name="497" href="#497">497</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">void</strong> put_byte(byte[] p, <strong class="jxr_keyword">int</strong> start, <strong class="jxr_keyword">int</strong> len) {
<a class="jxr_linenumber" name="498" href="#498">498</a>         System.arraycopy(p, start, pending_buf, pending, len);
<a class="jxr_linenumber" name="499" href="#499">499</a>         pending += len;
<a class="jxr_linenumber" name="500" href="#500">500</a>     }
<a class="jxr_linenumber" name="501" href="#501">501</a> 
<a class="jxr_linenumber" name="502" href="#502">502</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">void</strong> put_byte(byte c) {
<a class="jxr_linenumber" name="503" href="#503">503</a>         pending_buf[pending ++] = c;
<a class="jxr_linenumber" name="504" href="#504">504</a>     }
<a class="jxr_linenumber" name="505" href="#505">505</a> 
<a class="jxr_linenumber" name="506" href="#506">506</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">void</strong> put_<strong class="jxr_keyword">short</strong>(<strong class="jxr_keyword">int</strong> w) {
<a class="jxr_linenumber" name="507" href="#507">507</a>         put_byte((byte) w<em class="jxr_comment">/*<em class="jxr_comment">&amp;0xff*/</em>);</em>
<a class="jxr_linenumber" name="508" href="#508">508</a>         put_byte((byte) (w &gt;&gt;&gt; 8));
<a class="jxr_linenumber" name="509" href="#509">509</a>     }
<a class="jxr_linenumber" name="510" href="#510">510</a> 
<a class="jxr_linenumber" name="511" href="#511">511</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">void</strong> putShortMSB(<strong class="jxr_keyword">int</strong> b) {
<a class="jxr_linenumber" name="512" href="#512">512</a>         put_byte((byte) (b &gt;&gt; 8));
<a class="jxr_linenumber" name="513" href="#513">513</a>         put_byte((byte) b<em class="jxr_comment">/*<em class="jxr_comment">&amp;0xff*/</em>);</em>
<a class="jxr_linenumber" name="514" href="#514">514</a>     }
<a class="jxr_linenumber" name="515" href="#515">515</a> 
<a class="jxr_linenumber" name="516" href="#516">516</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">void</strong> send_code(<strong class="jxr_keyword">int</strong> c, <strong class="jxr_keyword">short</strong>[] tree) {
<a class="jxr_linenumber" name="517" href="#517">517</a>         <strong class="jxr_keyword">int</strong> c2 = c * 2;
<a class="jxr_linenumber" name="518" href="#518">518</a>         send_bits((tree[c2] &amp; 0xffff), (tree[c2 + 1] &amp; 0xffff));
<a class="jxr_linenumber" name="519" href="#519">519</a>     }
<a class="jxr_linenumber" name="520" href="#520">520</a> 
<a class="jxr_linenumber" name="521" href="#521">521</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> send_bits(<strong class="jxr_keyword">int</strong> value, <strong class="jxr_keyword">int</strong> length) {
<a class="jxr_linenumber" name="522" href="#522">522</a>         <strong class="jxr_keyword">int</strong> len = length;
<a class="jxr_linenumber" name="523" href="#523">523</a>         <strong class="jxr_keyword">if</strong> (bi_valid &gt; Buf_size - len) {
<a class="jxr_linenumber" name="524" href="#524">524</a>             <strong class="jxr_keyword">int</strong> val = value;
<a class="jxr_linenumber" name="525" href="#525">525</a>             <em class="jxr_comment">//      bi_buf |= (val &lt;&lt; bi_valid);</em>
<a class="jxr_linenumber" name="526" href="#526">526</a>             bi_buf |= val &lt;&lt; bi_valid &amp; 0xffff;
<a class="jxr_linenumber" name="527" href="#527">527</a>             put_<strong class="jxr_keyword">short</strong>(bi_buf);
<a class="jxr_linenumber" name="528" href="#528">528</a>             bi_buf = (<strong class="jxr_keyword">short</strong>) (val &gt;&gt;&gt; Buf_size - bi_valid);
<a class="jxr_linenumber" name="529" href="#529">529</a>             bi_valid += len - Buf_size;
<a class="jxr_linenumber" name="530" href="#530">530</a>         } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="531" href="#531">531</a>             <em class="jxr_comment">//      bi_buf |= (value) &lt;&lt; bi_valid;</em>
<a class="jxr_linenumber" name="532" href="#532">532</a>             bi_buf |= value &lt;&lt; bi_valid &amp; 0xffff;
<a class="jxr_linenumber" name="533" href="#533">533</a>             bi_valid += len;
<a class="jxr_linenumber" name="534" href="#534">534</a>         }
<a class="jxr_linenumber" name="535" href="#535">535</a>     }
<a class="jxr_linenumber" name="536" href="#536">536</a> 
<a class="jxr_linenumber" name="537" href="#537">537</a>     <em class="jxr_comment">// Send one empty static block to give enough lookahead for inflate.</em>
<a class="jxr_linenumber" name="538" href="#538">538</a>     <em class="jxr_comment">// This takes 10 bits, of which 7 may remain in the bit buffer.</em>
<a class="jxr_linenumber" name="539" href="#539">539</a>     <em class="jxr_comment">// The current inflate code requires 9 bits of lookahead. If the</em>
<a class="jxr_linenumber" name="540" href="#540">540</a>     <em class="jxr_comment">// last two codes for the previous block (real code plus EOB) were coded</em>
<a class="jxr_linenumber" name="541" href="#541">541</a>     <em class="jxr_comment">// on 5 bits or less, inflate may have only 5+3 bits of lookahead to decode</em>
<a class="jxr_linenumber" name="542" href="#542">542</a>     <em class="jxr_comment">// the last real code. In this case we send two empty static blocks instead</em>
<a class="jxr_linenumber" name="543" href="#543">543</a>     <em class="jxr_comment">// of one. (There are no problems if the previous block is stored or fixed.)</em>
<a class="jxr_linenumber" name="544" href="#544">544</a>     <em class="jxr_comment">// To simplify the code, we assume the worst case of last real code encoded</em>
<a class="jxr_linenumber" name="545" href="#545">545</a>     <em class="jxr_comment">// on one bit only.</em>
<a class="jxr_linenumber" name="546" href="#546">546</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> _tr_align() {
<a class="jxr_linenumber" name="547" href="#547">547</a>         send_bits(STATIC_TREES &lt;&lt; 1, 3);
<a class="jxr_linenumber" name="548" href="#548">548</a>         send_code(END_BLOCK, StaticTree.<strong class="jxr_keyword">static</strong>_ltree);
<a class="jxr_linenumber" name="549" href="#549">549</a> 
<a class="jxr_linenumber" name="550" href="#550">550</a>         bi_flush();
<a class="jxr_linenumber" name="551" href="#551">551</a> 
<a class="jxr_linenumber" name="552" href="#552">552</a>         <em class="jxr_comment">// Of the 10 bits for the empty block, we have already sent</em>
<a class="jxr_linenumber" name="553" href="#553">553</a>         <em class="jxr_comment">// (10 - bi_valid) bits. The lookahead for the last real code (before</em>
<a class="jxr_linenumber" name="554" href="#554">554</a>         <em class="jxr_comment">// the EOB of the previous block) was thus at least one plus the length</em>
<a class="jxr_linenumber" name="555" href="#555">555</a>         <em class="jxr_comment">// of the EOB plus what we have just sent of the empty static block.</em>
<a class="jxr_linenumber" name="556" href="#556">556</a>         <strong class="jxr_keyword">if</strong> (1 + last_eob_len + 10 - bi_valid &lt; 9) {
<a class="jxr_linenumber" name="557" href="#557">557</a>             send_bits(STATIC_TREES &lt;&lt; 1, 3);
<a class="jxr_linenumber" name="558" href="#558">558</a>             send_code(END_BLOCK, StaticTree.<strong class="jxr_keyword">static</strong>_ltree);
<a class="jxr_linenumber" name="559" href="#559">559</a>             bi_flush();
<a class="jxr_linenumber" name="560" href="#560">560</a>         }
<a class="jxr_linenumber" name="561" href="#561">561</a>         last_eob_len = 7;
<a class="jxr_linenumber" name="562" href="#562">562</a>     }
<a class="jxr_linenumber" name="563" href="#563">563</a> 
<a class="jxr_linenumber" name="564" href="#564">564</a>     <em class="jxr_comment">// Save the match info and tally the frequency counts. Return true if</em>
<a class="jxr_linenumber" name="565" href="#565">565</a>     <em class="jxr_comment">// the current block must be flushed.</em>
<a class="jxr_linenumber" name="566" href="#566">566</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> _tr_tally(<strong class="jxr_keyword">int</strong> dist, <em class="jxr_comment">// distance of matched string</em>
<a class="jxr_linenumber" name="567" href="#567">567</a>             <strong class="jxr_keyword">int</strong> lc <em class="jxr_comment">// match length-MIN_MATCH or unmatched char (if dist==0)</em>
<a class="jxr_linenumber" name="568" href="#568">568</a>     ) {
<a class="jxr_linenumber" name="569" href="#569">569</a> 
<a class="jxr_linenumber" name="570" href="#570">570</a>         pending_buf[d_buf + last_lit * 2] = (byte) (dist &gt;&gt;&gt; 8);
<a class="jxr_linenumber" name="571" href="#571">571</a>         pending_buf[d_buf + last_lit * 2 + 1] = (byte) dist;
<a class="jxr_linenumber" name="572" href="#572">572</a> 
<a class="jxr_linenumber" name="573" href="#573">573</a>         pending_buf[l_buf + last_lit] = (byte) lc;
<a class="jxr_linenumber" name="574" href="#574">574</a>         last_lit ++;
<a class="jxr_linenumber" name="575" href="#575">575</a> 
<a class="jxr_linenumber" name="576" href="#576">576</a>         <strong class="jxr_keyword">if</strong> (dist == 0) {
<a class="jxr_linenumber" name="577" href="#577">577</a>             <em class="jxr_comment">// lc is the unmatched char</em>
<a class="jxr_linenumber" name="578" href="#578">578</a>             dyn_ltree[lc * 2] ++;
<a class="jxr_linenumber" name="579" href="#579">579</a>         } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="580" href="#580">580</a>             matches ++;
<a class="jxr_linenumber" name="581" href="#581">581</a>             <em class="jxr_comment">// Here, lc is the match length - MIN_MATCH</em>
<a class="jxr_linenumber" name="582" href="#582">582</a>             dist --; <em class="jxr_comment">// dist = match distance - 1</em>
<a class="jxr_linenumber" name="583" href="#583">583</a>             dyn_ltree[(Tree._length_code[lc] + JZlib.LITERALS + 1) * 2] ++;
<a class="jxr_linenumber" name="584" href="#584">584</a>             dyn_dtree[Tree.d_code(dist) * 2] ++;
<a class="jxr_linenumber" name="585" href="#585">585</a>         }
<a class="jxr_linenumber" name="586" href="#586">586</a> 
<a class="jxr_linenumber" name="587" href="#587">587</a>         <strong class="jxr_keyword">if</strong> ((last_lit &amp; 0x1fff) == 0 &amp;&amp; level &gt; 2) {
<a class="jxr_linenumber" name="588" href="#588">588</a>             <em class="jxr_comment">// Compute an upper bound for the compressed length</em>
<a class="jxr_linenumber" name="589" href="#589">589</a>             <strong class="jxr_keyword">int</strong> out_length = last_lit * 8;
<a class="jxr_linenumber" name="590" href="#590">590</a>             <strong class="jxr_keyword">int</strong> in_length = strstart - block_start;
<a class="jxr_linenumber" name="591" href="#591">591</a>             <strong class="jxr_keyword">int</strong> dcode;
<a class="jxr_linenumber" name="592" href="#592">592</a>             <strong class="jxr_keyword">for</strong> (dcode = 0; dcode &lt; JZlib.D_CODES; dcode ++) {
<a class="jxr_linenumber" name="593" href="#593">593</a>                 out_length += dyn_dtree[dcode * 2] *
<a class="jxr_linenumber" name="594" href="#594">594</a>                         (5L + Tree.extra_dbits[dcode]);
<a class="jxr_linenumber" name="595" href="#595">595</a>             }
<a class="jxr_linenumber" name="596" href="#596">596</a>             out_length &gt;&gt;&gt;= 3;
<a class="jxr_linenumber" name="597" href="#597">597</a>             <strong class="jxr_keyword">if</strong> (matches &lt; last_lit / 2 &amp;&amp; out_length &lt; in_length / 2) {
<a class="jxr_linenumber" name="598" href="#598">598</a>                 <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
<a class="jxr_linenumber" name="599" href="#599">599</a>             }
<a class="jxr_linenumber" name="600" href="#600">600</a>         }
<a class="jxr_linenumber" name="601" href="#601">601</a> 
<a class="jxr_linenumber" name="602" href="#602">602</a>         <strong class="jxr_keyword">return</strong> last_lit == lit_bufsize - 1;
<a class="jxr_linenumber" name="603" href="#603">603</a>         <em class="jxr_comment">// We avoid equality with lit_bufsize because of wraparound at 64K</em>
<a class="jxr_linenumber" name="604" href="#604">604</a>         <em class="jxr_comment">// on 16 bit machines and because stored blocks are restricted to</em>
<a class="jxr_linenumber" name="605" href="#605">605</a>         <em class="jxr_comment">// 64K-1 bytes.</em>
<a class="jxr_linenumber" name="606" href="#606">606</a>     }
<a class="jxr_linenumber" name="607" href="#607">607</a> 
<a class="jxr_linenumber" name="608" href="#608">608</a>     <em class="jxr_comment">// Send the block data compressed using the given Huffman trees</em>
<a class="jxr_linenumber" name="609" href="#609">609</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> compress_block(<strong class="jxr_keyword">short</strong>[] ltree, <strong class="jxr_keyword">short</strong>[] dtree) {
<a class="jxr_linenumber" name="610" href="#610">610</a>         <strong class="jxr_keyword">int</strong> dist; <em class="jxr_comment">// distance of matched string</em>
<a class="jxr_linenumber" name="611" href="#611">611</a>         <strong class="jxr_keyword">int</strong> lc; <em class="jxr_comment">// match length or unmatched char (if dist == 0)</em>
<a class="jxr_linenumber" name="612" href="#612">612</a>         <strong class="jxr_keyword">int</strong> lx = 0; <em class="jxr_comment">// running index in l_buf</em>
<a class="jxr_linenumber" name="613" href="#613">613</a>         <strong class="jxr_keyword">int</strong> code; <em class="jxr_comment">// the code to send</em>
<a class="jxr_linenumber" name="614" href="#614">614</a>         <strong class="jxr_keyword">int</strong> extra; <em class="jxr_comment">// number of extra bits to send</em>
<a class="jxr_linenumber" name="615" href="#615">615</a> 
<a class="jxr_linenumber" name="616" href="#616">616</a>         <strong class="jxr_keyword">if</strong> (last_lit != 0) {
<a class="jxr_linenumber" name="617" href="#617">617</a>             <strong class="jxr_keyword">do</strong> {
<a class="jxr_linenumber" name="618" href="#618">618</a>                 dist = pending_buf[d_buf + lx * 2] &lt;&lt; 8 &amp; 0xff00 |
<a class="jxr_linenumber" name="619" href="#619">619</a>                         pending_buf[d_buf + lx * 2 + 1] &amp; 0xff;
<a class="jxr_linenumber" name="620" href="#620">620</a>                 lc = pending_buf[l_buf + lx] &amp; 0xff;
<a class="jxr_linenumber" name="621" href="#621">621</a>                 lx ++;
<a class="jxr_linenumber" name="622" href="#622">622</a> 
<a class="jxr_linenumber" name="623" href="#623">623</a>                 <strong class="jxr_keyword">if</strong> (dist == 0) {
<a class="jxr_linenumber" name="624" href="#624">624</a>                     send_code(lc, ltree); <em class="jxr_comment">// send a literal byte</em>
<a class="jxr_linenumber" name="625" href="#625">625</a>                 } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="626" href="#626">626</a>                     <em class="jxr_comment">// Here, lc is the match length - MIN_MATCH</em>
<a class="jxr_linenumber" name="627" href="#627">627</a>                     code = Tree._length_code[lc];
<a class="jxr_linenumber" name="628" href="#628">628</a> 
<a class="jxr_linenumber" name="629" href="#629">629</a>                     send_code(code + JZlib.LITERALS + 1, ltree); <em class="jxr_comment">// send the length code</em>
<a class="jxr_linenumber" name="630" href="#630">630</a>                     extra = Tree.extra_lbits[code];
<a class="jxr_linenumber" name="631" href="#631">631</a>                     <strong class="jxr_keyword">if</strong> (extra != 0) {
<a class="jxr_linenumber" name="632" href="#632">632</a>                         lc -= Tree.base_length[code];
<a class="jxr_linenumber" name="633" href="#633">633</a>                         send_bits(lc, extra); <em class="jxr_comment">// send the extra length bits</em>
<a class="jxr_linenumber" name="634" href="#634">634</a>                     }
<a class="jxr_linenumber" name="635" href="#635">635</a>                     dist --; <em class="jxr_comment">// dist is now the match distance - 1</em>
<a class="jxr_linenumber" name="636" href="#636">636</a>                     code = Tree.d_code(dist);
<a class="jxr_linenumber" name="637" href="#637">637</a> 
<a class="jxr_linenumber" name="638" href="#638">638</a>                     send_code(code, dtree); <em class="jxr_comment">// send the distance code</em>
<a class="jxr_linenumber" name="639" href="#639">639</a>                     extra = Tree.extra_dbits[code];
<a class="jxr_linenumber" name="640" href="#640">640</a>                     <strong class="jxr_keyword">if</strong> (extra != 0) {
<a class="jxr_linenumber" name="641" href="#641">641</a>                         dist -= Tree.base_dist[code];
<a class="jxr_linenumber" name="642" href="#642">642</a>                         send_bits(dist, extra); <em class="jxr_comment">// send the extra distance bits</em>
<a class="jxr_linenumber" name="643" href="#643">643</a>                     }
<a class="jxr_linenumber" name="644" href="#644">644</a>                 } <em class="jxr_comment">// literal or match pair ?</em>
<a class="jxr_linenumber" name="645" href="#645">645</a> 
<a class="jxr_linenumber" name="646" href="#646">646</a>                 <em class="jxr_comment">// Check that the overlay between pending_buf and d_buf+l_buf is ok:</em>
<a class="jxr_linenumber" name="647" href="#647">647</a>             } <strong class="jxr_keyword">while</strong> (lx &lt; last_lit);
<a class="jxr_linenumber" name="648" href="#648">648</a>         }
<a class="jxr_linenumber" name="649" href="#649">649</a> 
<a class="jxr_linenumber" name="650" href="#650">650</a>         send_code(END_BLOCK, ltree);
<a class="jxr_linenumber" name="651" href="#651">651</a>         last_eob_len = ltree[END_BLOCK * 2 + 1];
<a class="jxr_linenumber" name="652" href="#652">652</a>     }
<a class="jxr_linenumber" name="653" href="#653">653</a> 
<a class="jxr_linenumber" name="654" href="#654">654</a>     <em class="jxr_comment">// Set the data type to ASCII or BINARY, using a crude approximation:</em>
<a class="jxr_linenumber" name="655" href="#655">655</a>     <em class="jxr_comment">// binary if more than 20% of the bytes are &lt;= 6 or &gt;= 128, ascii otherwise.</em>
<a class="jxr_linenumber" name="656" href="#656">656</a>     <em class="jxr_comment">// IN assertion: the fields freq of dyn_ltree are set and the total of all</em>
<a class="jxr_linenumber" name="657" href="#657">657</a>     <em class="jxr_comment">// frequencies does not exceed 64K (to fit in an int on 16 bit machines).</em>
<a class="jxr_linenumber" name="658" href="#658">658</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> set_data_type() {
<a class="jxr_linenumber" name="659" href="#659">659</a>         <strong class="jxr_keyword">int</strong> n = 0;
<a class="jxr_linenumber" name="660" href="#660">660</a>         <strong class="jxr_keyword">int</strong> ascii_freq = 0;
<a class="jxr_linenumber" name="661" href="#661">661</a>         <strong class="jxr_keyword">int</strong> bin_freq = 0;
<a class="jxr_linenumber" name="662" href="#662">662</a>         <strong class="jxr_keyword">while</strong> (n &lt; 7) {
<a class="jxr_linenumber" name="663" href="#663">663</a>             bin_freq += dyn_ltree[n * 2];
<a class="jxr_linenumber" name="664" href="#664">664</a>             n ++;
<a class="jxr_linenumber" name="665" href="#665">665</a>         }
<a class="jxr_linenumber" name="666" href="#666">666</a>         <strong class="jxr_keyword">while</strong> (n &lt; 128) {
<a class="jxr_linenumber" name="667" href="#667">667</a>             ascii_freq += dyn_ltree[n * 2];
<a class="jxr_linenumber" name="668" href="#668">668</a>             n ++;
<a class="jxr_linenumber" name="669" href="#669">669</a>         }
<a class="jxr_linenumber" name="670" href="#670">670</a>         <strong class="jxr_keyword">while</strong> (n &lt; JZlib.LITERALS) {
<a class="jxr_linenumber" name="671" href="#671">671</a>             bin_freq += dyn_ltree[n * 2];
<a class="jxr_linenumber" name="672" href="#672">672</a>             n ++;
<a class="jxr_linenumber" name="673" href="#673">673</a>         }
<a class="jxr_linenumber" name="674" href="#674">674</a>         data_type = (byte) (bin_freq &gt; ascii_freq &gt;&gt;&gt; 2? Z_BINARY : Z_ASCII);
<a class="jxr_linenumber" name="675" href="#675">675</a>     }
<a class="jxr_linenumber" name="676" href="#676">676</a> 
<a class="jxr_linenumber" name="677" href="#677">677</a>     <em class="jxr_comment">// Flush the bit buffer, keeping at most 7 bits in it.</em>
<a class="jxr_linenumber" name="678" href="#678">678</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> bi_flush() {
<a class="jxr_linenumber" name="679" href="#679">679</a>         <strong class="jxr_keyword">if</strong> (bi_valid == 16) {
<a class="jxr_linenumber" name="680" href="#680">680</a>             put_<strong class="jxr_keyword">short</strong>(bi_buf);
<a class="jxr_linenumber" name="681" href="#681">681</a>             bi_buf = 0;
<a class="jxr_linenumber" name="682" href="#682">682</a>             bi_valid = 0;
<a class="jxr_linenumber" name="683" href="#683">683</a>         } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (bi_valid &gt;= 8) {
<a class="jxr_linenumber" name="684" href="#684">684</a>             put_byte((byte) bi_buf);
<a class="jxr_linenumber" name="685" href="#685">685</a>             bi_buf &gt;&gt;&gt;= 8;
<a class="jxr_linenumber" name="686" href="#686">686</a>             bi_valid -= 8;
<a class="jxr_linenumber" name="687" href="#687">687</a>         }
<a class="jxr_linenumber" name="688" href="#688">688</a>     }
<a class="jxr_linenumber" name="689" href="#689">689</a> 
<a class="jxr_linenumber" name="690" href="#690">690</a>     <em class="jxr_comment">// Flush the bit buffer and align the output on a byte boundary</em>
<a class="jxr_linenumber" name="691" href="#691">691</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> bi_windup() {
<a class="jxr_linenumber" name="692" href="#692">692</a>         <strong class="jxr_keyword">if</strong> (bi_valid &gt; 8) {
<a class="jxr_linenumber" name="693" href="#693">693</a>             put_<strong class="jxr_keyword">short</strong>(bi_buf);
<a class="jxr_linenumber" name="694" href="#694">694</a>         } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (bi_valid &gt; 0) {
<a class="jxr_linenumber" name="695" href="#695">695</a>             put_byte((byte) bi_buf);
<a class="jxr_linenumber" name="696" href="#696">696</a>         }
<a class="jxr_linenumber" name="697" href="#697">697</a>         bi_buf = 0;
<a class="jxr_linenumber" name="698" href="#698">698</a>         bi_valid = 0;
<a class="jxr_linenumber" name="699" href="#699">699</a>     }
<a class="jxr_linenumber" name="700" href="#700">700</a> 
<a class="jxr_linenumber" name="701" href="#701">701</a>     <em class="jxr_comment">// Copy a stored block, storing first the length and its</em>
<a class="jxr_linenumber" name="702" href="#702">702</a>     <em class="jxr_comment">// one's complement if requested.</em>
<a class="jxr_linenumber" name="703" href="#703">703</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> copy_block(<strong class="jxr_keyword">int</strong> buf, <em class="jxr_comment">// the input data</em>
<a class="jxr_linenumber" name="704" href="#704">704</a>             <strong class="jxr_keyword">int</strong> len, <em class="jxr_comment">// its length</em>
<a class="jxr_linenumber" name="705" href="#705">705</a>             <strong class="jxr_keyword">boolean</strong> header <em class="jxr_comment">// true if block header must be written</em>
<a class="jxr_linenumber" name="706" href="#706">706</a>     ) {
<a class="jxr_linenumber" name="707" href="#707">707</a>         bi_windup(); <em class="jxr_comment">// align on byte boundary</em>
<a class="jxr_linenumber" name="708" href="#708">708</a>         last_eob_len = 8; <em class="jxr_comment">// enough lookahead for inflate</em>
<a class="jxr_linenumber" name="709" href="#709">709</a> 
<a class="jxr_linenumber" name="710" href="#710">710</a>         <strong class="jxr_keyword">if</strong> (header) {
<a class="jxr_linenumber" name="711" href="#711">711</a>             put_<strong class="jxr_keyword">short</strong>((<strong class="jxr_keyword">short</strong>) len);
<a class="jxr_linenumber" name="712" href="#712">712</a>             put_<strong class="jxr_keyword">short</strong>((<strong class="jxr_keyword">short</strong>) ~len);
<a class="jxr_linenumber" name="713" href="#713">713</a>         }
<a class="jxr_linenumber" name="714" href="#714">714</a> 
<a class="jxr_linenumber" name="715" href="#715">715</a>         <em class="jxr_comment">//  while(len--!=0) {</em>
<a class="jxr_linenumber" name="716" href="#716">716</a>         <em class="jxr_comment">//    put_byte(window[buf+index]);</em>
<a class="jxr_linenumber" name="717" href="#717">717</a>         <em class="jxr_comment">//    index++;</em>
<a class="jxr_linenumber" name="718" href="#718">718</a>         <em class="jxr_comment">//  }</em>
<a class="jxr_linenumber" name="719" href="#719">719</a>         put_byte(window, buf, len);
<a class="jxr_linenumber" name="720" href="#720">720</a>     }
<a class="jxr_linenumber" name="721" href="#721">721</a> 
<a class="jxr_linenumber" name="722" href="#722">722</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> flush_block_only(<strong class="jxr_keyword">boolean</strong> eof) {
<a class="jxr_linenumber" name="723" href="#723">723</a>         _tr_flush_block(block_start &gt;= 0? block_start : -1, strstart -
<a class="jxr_linenumber" name="724" href="#724">724</a>                 block_start, eof);
<a class="jxr_linenumber" name="725" href="#725">725</a>         block_start = strstart;
<a class="jxr_linenumber" name="726" href="#726">726</a>         strm.flush_pending();
<a class="jxr_linenumber" name="727" href="#727">727</a>     }
<a class="jxr_linenumber" name="728" href="#728">728</a> 
<a class="jxr_linenumber" name="729" href="#729">729</a>     <em class="jxr_comment">// Copy without compression as much as possible from the input stream, return</em>
<a class="jxr_linenumber" name="730" href="#730">730</a>     <em class="jxr_comment">// the current block state.</em>
<a class="jxr_linenumber" name="731" href="#731">731</a>     <em class="jxr_comment">// This function does not insert new strings in the dictionary since</em>
<a class="jxr_linenumber" name="732" href="#732">732</a>     <em class="jxr_comment">// uncompressible data is probably not useful. This function is used</em>
<a class="jxr_linenumber" name="733" href="#733">733</a>     <em class="jxr_comment">// only for the level=0 compression option.</em>
<a class="jxr_linenumber" name="734" href="#734">734</a>     <em class="jxr_comment">// NOTE: this function should be optimized to avoid extra copying from</em>
<a class="jxr_linenumber" name="735" href="#735">735</a>     <em class="jxr_comment">// window to pending_buf.</em>
<a class="jxr_linenumber" name="736" href="#736">736</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> deflate_stored(<strong class="jxr_keyword">int</strong> flush) {
<a class="jxr_linenumber" name="737" href="#737">737</a>         <em class="jxr_comment">// Stored blocks are limited to 0xffff bytes, pending_buf is limited</em>
<a class="jxr_linenumber" name="738" href="#738">738</a>         <em class="jxr_comment">// to pending_buf_size, and each stored block has a 5 byte header:</em>
<a class="jxr_linenumber" name="739" href="#739">739</a> 
<a class="jxr_linenumber" name="740" href="#740">740</a>         <strong class="jxr_keyword">int</strong> max_block_size = 0xffff;
<a class="jxr_linenumber" name="741" href="#741">741</a>         <strong class="jxr_keyword">int</strong> max_start;
<a class="jxr_linenumber" name="742" href="#742">742</a> 
<a class="jxr_linenumber" name="743" href="#743">743</a>         <strong class="jxr_keyword">if</strong> (max_block_size &gt; pending_buf_size - 5) {
<a class="jxr_linenumber" name="744" href="#744">744</a>             max_block_size = pending_buf_size - 5;
<a class="jxr_linenumber" name="745" href="#745">745</a>         }
<a class="jxr_linenumber" name="746" href="#746">746</a> 
<a class="jxr_linenumber" name="747" href="#747">747</a>         <em class="jxr_comment">// Copy as much as possible from input to output:</em>
<a class="jxr_linenumber" name="748" href="#748">748</a>         <strong class="jxr_keyword">while</strong> (<strong class="jxr_keyword">true</strong>) {
<a class="jxr_linenumber" name="749" href="#749">749</a>             <em class="jxr_comment">// Fill the window as much as possible:</em>
<a class="jxr_linenumber" name="750" href="#750">750</a>             <strong class="jxr_keyword">if</strong> (lookahead &lt;= 1) {
<a class="jxr_linenumber" name="751" href="#751">751</a>                 fill_window();
<a class="jxr_linenumber" name="752" href="#752">752</a>                 <strong class="jxr_keyword">if</strong> (lookahead == 0 &amp;&amp; flush == JZlib.Z_NO_FLUSH) {
<a class="jxr_linenumber" name="753" href="#753">753</a>                     <strong class="jxr_keyword">return</strong> NeedMore;
<a class="jxr_linenumber" name="754" href="#754">754</a>                 }
<a class="jxr_linenumber" name="755" href="#755">755</a>                 <strong class="jxr_keyword">if</strong> (lookahead == 0) {
<a class="jxr_linenumber" name="756" href="#756">756</a>                     <strong class="jxr_keyword">break</strong>; <em class="jxr_comment">// flush the current block</em>
<a class="jxr_linenumber" name="757" href="#757">757</a>                 }
<a class="jxr_linenumber" name="758" href="#758">758</a>             }
<a class="jxr_linenumber" name="759" href="#759">759</a> 
<a class="jxr_linenumber" name="760" href="#760">760</a>             strstart += lookahead;
<a class="jxr_linenumber" name="761" href="#761">761</a>             lookahead = 0;
<a class="jxr_linenumber" name="762" href="#762">762</a> 
<a class="jxr_linenumber" name="763" href="#763">763</a>             <em class="jxr_comment">// Emit a stored block if pending_buf will be full:</em>
<a class="jxr_linenumber" name="764" href="#764">764</a>             max_start = block_start + max_block_size;
<a class="jxr_linenumber" name="765" href="#765">765</a>             <strong class="jxr_keyword">if</strong> (strstart == 0 || strstart &gt;= max_start) {
<a class="jxr_linenumber" name="766" href="#766">766</a>                 <em class="jxr_comment">// strstart == 0 is possible when wraparound on 16-bit machine</em>
<a class="jxr_linenumber" name="767" href="#767">767</a>                 lookahead = strstart - max_start;
<a class="jxr_linenumber" name="768" href="#768">768</a>                 strstart = max_start;
<a class="jxr_linenumber" name="769" href="#769">769</a> 
<a class="jxr_linenumber" name="770" href="#770">770</a>                 flush_block_only(false);
<a class="jxr_linenumber" name="771" href="#771">771</a>                 <strong class="jxr_keyword">if</strong> (strm.avail_out == 0) {
<a class="jxr_linenumber" name="772" href="#772">772</a>                     <strong class="jxr_keyword">return</strong> NeedMore;
<a class="jxr_linenumber" name="773" href="#773">773</a>                 }
<a class="jxr_linenumber" name="774" href="#774">774</a> 
<a class="jxr_linenumber" name="775" href="#775">775</a>             }
<a class="jxr_linenumber" name="776" href="#776">776</a> 
<a class="jxr_linenumber" name="777" href="#777">777</a>             <em class="jxr_comment">// Flush if we may have to slide, otherwise block_start may become</em>
<a class="jxr_linenumber" name="778" href="#778">778</a>             <em class="jxr_comment">// negative and the data will be gone:</em>
<a class="jxr_linenumber" name="779" href="#779">779</a>             <strong class="jxr_keyword">if</strong> (strstart - block_start &gt;= w_size - MIN_LOOKAHEAD) {
<a class="jxr_linenumber" name="780" href="#780">780</a>                 flush_block_only(false);
<a class="jxr_linenumber" name="781" href="#781">781</a>                 <strong class="jxr_keyword">if</strong> (strm.avail_out == 0) {
<a class="jxr_linenumber" name="782" href="#782">782</a>                     <strong class="jxr_keyword">return</strong> NeedMore;
<a class="jxr_linenumber" name="783" href="#783">783</a>                 }
<a class="jxr_linenumber" name="784" href="#784">784</a>             }
<a class="jxr_linenumber" name="785" href="#785">785</a>         }
<a class="jxr_linenumber" name="786" href="#786">786</a> 
<a class="jxr_linenumber" name="787" href="#787">787</a>         flush_block_only(flush == JZlib.Z_FINISH);
<a class="jxr_linenumber" name="788" href="#788">788</a>         <strong class="jxr_keyword">if</strong> (strm.avail_out == 0) {
<a class="jxr_linenumber" name="789" href="#789">789</a>             <strong class="jxr_keyword">return</strong> flush == JZlib.Z_FINISH? FinishStarted : NeedMore;
<a class="jxr_linenumber" name="790" href="#790">790</a>         }
<a class="jxr_linenumber" name="791" href="#791">791</a> 
<a class="jxr_linenumber" name="792" href="#792">792</a>         <strong class="jxr_keyword">return</strong> flush == JZlib.Z_FINISH? FinishDone : BlockDone;
<a class="jxr_linenumber" name="793" href="#793">793</a>     }
<a class="jxr_linenumber" name="794" href="#794">794</a> 
<a class="jxr_linenumber" name="795" href="#795">795</a>     <em class="jxr_comment">// Send a stored block</em>
<a class="jxr_linenumber" name="796" href="#796">796</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> _tr_stored_block(<strong class="jxr_keyword">int</strong> buf, <em class="jxr_comment">// input block</em>
<a class="jxr_linenumber" name="797" href="#797">797</a>             <strong class="jxr_keyword">int</strong> stored_len, <em class="jxr_comment">// length of input block</em>
<a class="jxr_linenumber" name="798" href="#798">798</a>             <strong class="jxr_keyword">boolean</strong> eof <em class="jxr_comment">// true if this is the last block for a file</em>
<a class="jxr_linenumber" name="799" href="#799">799</a>     ) {
<a class="jxr_linenumber" name="800" href="#800">800</a>         send_bits((STORED_BLOCK &lt;&lt; 1) + (eof? 1 : 0), 3); <em class="jxr_comment">// send block type</em>
<a class="jxr_linenumber" name="801" href="#801">801</a>         copy_block(buf, stored_len, <strong class="jxr_keyword">true</strong>); <em class="jxr_comment">// with header</em>
<a class="jxr_linenumber" name="802" href="#802">802</a>     }
<a class="jxr_linenumber" name="803" href="#803">803</a> 
<a class="jxr_linenumber" name="804" href="#804">804</a>     <em class="jxr_comment">// Determine the best encoding for the current block: dynamic trees, static</em>
<a class="jxr_linenumber" name="805" href="#805">805</a>     <em class="jxr_comment">// trees or store, and output the encoded block to the zip file.</em>
<a class="jxr_linenumber" name="806" href="#806">806</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> _tr_flush_block(<strong class="jxr_keyword">int</strong> buf, <em class="jxr_comment">// input block, or NULL if too old</em>
<a class="jxr_linenumber" name="807" href="#807">807</a>             <strong class="jxr_keyword">int</strong> stored_len, <em class="jxr_comment">// length of input block</em>
<a class="jxr_linenumber" name="808" href="#808">808</a>             <strong class="jxr_keyword">boolean</strong> eof <em class="jxr_comment">// true if this is the last block for a file</em>
<a class="jxr_linenumber" name="809" href="#809">809</a>     ) {
<a class="jxr_linenumber" name="810" href="#810">810</a>         <strong class="jxr_keyword">int</strong> opt_lenb, <strong class="jxr_keyword">static</strong>_lenb;<em class="jxr_comment">// opt_len and static_len in bytes</em>
<a class="jxr_linenumber" name="811" href="#811">811</a>         <strong class="jxr_keyword">int</strong> max_blindex = 0; <em class="jxr_comment">// index of last bit length code of non zero freq</em>
<a class="jxr_linenumber" name="812" href="#812">812</a> 
<a class="jxr_linenumber" name="813" href="#813">813</a>         <em class="jxr_comment">// Build the Huffman trees unless a stored block is forced</em>
<a class="jxr_linenumber" name="814" href="#814">814</a>         <strong class="jxr_keyword">if</strong> (level &gt; 0) {
<a class="jxr_linenumber" name="815" href="#815">815</a>             <em class="jxr_comment">// Check if the file is ascii or binary</em>
<a class="jxr_linenumber" name="816" href="#816">816</a>             <strong class="jxr_keyword">if</strong> (data_type == Z_UNKNOWN) {
<a class="jxr_linenumber" name="817" href="#817">817</a>                 set_data_type();
<a class="jxr_linenumber" name="818" href="#818">818</a>             }
<a class="jxr_linenumber" name="819" href="#819">819</a> 
<a class="jxr_linenumber" name="820" href="#820">820</a>             <em class="jxr_comment">// Construct the literal and distance trees</em>
<a class="jxr_linenumber" name="821" href="#821">821</a>             l_desc.build_tree(<strong class="jxr_keyword">this</strong>);
<a class="jxr_linenumber" name="822" href="#822">822</a> 
<a class="jxr_linenumber" name="823" href="#823">823</a>             d_desc.build_tree(<strong class="jxr_keyword">this</strong>);
<a class="jxr_linenumber" name="824" href="#824">824</a> 
<a class="jxr_linenumber" name="825" href="#825">825</a>             <em class="jxr_comment">// At this point, opt_len and static_len are the total bit lengths of</em>
<a class="jxr_linenumber" name="826" href="#826">826</a>             <em class="jxr_comment">// the compressed block data, excluding the tree representations.</em>
<a class="jxr_linenumber" name="827" href="#827">827</a> 
<a class="jxr_linenumber" name="828" href="#828">828</a>             <em class="jxr_comment">// Build the bit length tree for the above two trees, and get the index</em>
<a class="jxr_linenumber" name="829" href="#829">829</a>             <em class="jxr_comment">// in bl_order of the last bit length code to send.</em>
<a class="jxr_linenumber" name="830" href="#830">830</a>             max_blindex = build_bl_tree();
<a class="jxr_linenumber" name="831" href="#831">831</a> 
<a class="jxr_linenumber" name="832" href="#832">832</a>             <em class="jxr_comment">// Determine the best encoding. Compute first the block length in bytes</em>
<a class="jxr_linenumber" name="833" href="#833">833</a>             opt_lenb = opt_len + 3 + 7 &gt;&gt;&gt; 3;
<a class="jxr_linenumber" name="834" href="#834">834</a>             <strong class="jxr_keyword">static</strong>_lenb = <strong class="jxr_keyword">static</strong>_len + 3 + 7 &gt;&gt;&gt; 3;
<a class="jxr_linenumber" name="835" href="#835">835</a> 
<a class="jxr_linenumber" name="836" href="#836">836</a>             <strong class="jxr_keyword">if</strong> (<strong class="jxr_keyword">static</strong>_lenb &lt;= opt_lenb) {
<a class="jxr_linenumber" name="837" href="#837">837</a>                 opt_lenb = <strong class="jxr_keyword">static</strong>_lenb;
<a class="jxr_linenumber" name="838" href="#838">838</a>             }
<a class="jxr_linenumber" name="839" href="#839">839</a>         } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="840" href="#840">840</a>             opt_lenb = <strong class="jxr_keyword">static</strong>_lenb = stored_len + 5; <em class="jxr_comment">// force a stored block</em>
<a class="jxr_linenumber" name="841" href="#841">841</a>         }
<a class="jxr_linenumber" name="842" href="#842">842</a> 
<a class="jxr_linenumber" name="843" href="#843">843</a>         <strong class="jxr_keyword">if</strong> (stored_len + 4 &lt;= opt_lenb &amp;&amp; buf != -1) {
<a class="jxr_linenumber" name="844" href="#844">844</a>             <em class="jxr_comment">// 4: two words for the lengths</em>
<a class="jxr_linenumber" name="845" href="#845">845</a>             <em class="jxr_comment">// The test buf != NULL is only necessary if LIT_BUFSIZE &gt; WSIZE.</em>
<a class="jxr_linenumber" name="846" href="#846">846</a>             <em class="jxr_comment">// Otherwise we can't have processed more than WSIZE input bytes since</em>
<a class="jxr_linenumber" name="847" href="#847">847</a>             <em class="jxr_comment">// the last block flush, because compression would have been</em>
<a class="jxr_linenumber" name="848" href="#848">848</a>             <em class="jxr_comment">// successful. If LIT_BUFSIZE &lt;= WSIZE, it is never too late to</em>
<a class="jxr_linenumber" name="849" href="#849">849</a>             <em class="jxr_comment">// transform a block into a stored block.</em>
<a class="jxr_linenumber" name="850" href="#850">850</a>             _tr_stored_block(buf, stored_len, eof);
<a class="jxr_linenumber" name="851" href="#851">851</a>         } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (<strong class="jxr_keyword">static</strong>_lenb == opt_lenb) {
<a class="jxr_linenumber" name="852" href="#852">852</a>             send_bits((STATIC_TREES &lt;&lt; 1) + (eof? 1 : 0), 3);
<a class="jxr_linenumber" name="853" href="#853">853</a>             compress_block(StaticTree.<strong class="jxr_keyword">static</strong>_ltree, StaticTree.<strong class="jxr_keyword">static</strong>_dtree);
<a class="jxr_linenumber" name="854" href="#854">854</a>         } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="855" href="#855">855</a>             send_bits((DYN_TREES &lt;&lt; 1) + (eof? 1 : 0), 3);
<a class="jxr_linenumber" name="856" href="#856">856</a>             send_all_trees(l_desc.max_code + 1, d_desc.max_code + 1,
<a class="jxr_linenumber" name="857" href="#857">857</a>                     max_blindex + 1);
<a class="jxr_linenumber" name="858" href="#858">858</a>             compress_block(dyn_ltree, dyn_dtree);
<a class="jxr_linenumber" name="859" href="#859">859</a>         }
<a class="jxr_linenumber" name="860" href="#860">860</a> 
<a class="jxr_linenumber" name="861" href="#861">861</a>         <em class="jxr_comment">// The above check is made mod 2^32, for files larger than 512 MB</em>
<a class="jxr_linenumber" name="862" href="#862">862</a>         <em class="jxr_comment">// and uLong implemented on 32 bits.</em>
<a class="jxr_linenumber" name="863" href="#863">863</a> 
<a class="jxr_linenumber" name="864" href="#864">864</a>         init_block();
<a class="jxr_linenumber" name="865" href="#865">865</a> 
<a class="jxr_linenumber" name="866" href="#866">866</a>         <strong class="jxr_keyword">if</strong> (eof) {
<a class="jxr_linenumber" name="867" href="#867">867</a>             bi_windup();
<a class="jxr_linenumber" name="868" href="#868">868</a>         }
<a class="jxr_linenumber" name="869" href="#869">869</a>     }
<a class="jxr_linenumber" name="870" href="#870">870</a> 
<a class="jxr_linenumber" name="871" href="#871">871</a>     <em class="jxr_comment">// Fill the window when the lookahead becomes insufficient.</em>
<a class="jxr_linenumber" name="872" href="#872">872</a>     <em class="jxr_comment">// Updates strstart and lookahead.</em>
<a class="jxr_linenumber" name="873" href="#873">873</a>     <em class="jxr_comment">//</em>
<a class="jxr_linenumber" name="874" href="#874">874</a>     <em class="jxr_comment">// IN assertion: lookahead &lt; MIN_LOOKAHEAD</em>
<a class="jxr_linenumber" name="875" href="#875">875</a>     <em class="jxr_comment">// OUT assertions: strstart &lt;= window_size-MIN_LOOKAHEAD</em>
<a class="jxr_linenumber" name="876" href="#876">876</a>     <em class="jxr_comment">//    At least one byte has been read, or avail_in == 0; reads are</em>
<a class="jxr_linenumber" name="877" href="#877">877</a>     <em class="jxr_comment">//    performed for at least two bytes (required for the zip translate_eol</em>
<a class="jxr_linenumber" name="878" href="#878">878</a>     <em class="jxr_comment">//    option -- not supported here).</em>
<a class="jxr_linenumber" name="879" href="#879">879</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> fill_window() {
<a class="jxr_linenumber" name="880" href="#880">880</a>         <strong class="jxr_keyword">int</strong> n, m;
<a class="jxr_linenumber" name="881" href="#881">881</a>         <strong class="jxr_keyword">int</strong> p;
<a class="jxr_linenumber" name="882" href="#882">882</a>         <strong class="jxr_keyword">int</strong> more; <em class="jxr_comment">// Amount of free space at the end of the window.</em>
<a class="jxr_linenumber" name="883" href="#883">883</a> 
<a class="jxr_linenumber" name="884" href="#884">884</a>         <strong class="jxr_keyword">do</strong> {
<a class="jxr_linenumber" name="885" href="#885">885</a>             more = window_size - lookahead - strstart;
<a class="jxr_linenumber" name="886" href="#886">886</a> 
<a class="jxr_linenumber" name="887" href="#887">887</a>             <em class="jxr_comment">// Deal with !@#$% 64K limit:</em>
<a class="jxr_linenumber" name="888" href="#888">888</a>             <strong class="jxr_keyword">if</strong> (more == 0 &amp;&amp; strstart == 0 &amp;&amp; lookahead == 0) {
<a class="jxr_linenumber" name="889" href="#889">889</a>                 more = w_size;
<a class="jxr_linenumber" name="890" href="#890">890</a>             } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (more == -1) {
<a class="jxr_linenumber" name="891" href="#891">891</a>                 <em class="jxr_comment">// Very unlikely, but possible on 16 bit machine if strstart == 0</em>
<a class="jxr_linenumber" name="892" href="#892">892</a>                 <em class="jxr_comment">// and lookahead == 1 (input done one byte at time)</em>
<a class="jxr_linenumber" name="893" href="#893">893</a>                 more --;
<a class="jxr_linenumber" name="894" href="#894">894</a> 
<a class="jxr_linenumber" name="895" href="#895">895</a>                 <em class="jxr_comment">// If the window is almost full and there is insufficient lookahead,</em>
<a class="jxr_linenumber" name="896" href="#896">896</a>                 <em class="jxr_comment">// move the upper half to the lower one to make room in the upper half.</em>
<a class="jxr_linenumber" name="897" href="#897">897</a>             } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (strstart &gt;= w_size + w_size - MIN_LOOKAHEAD) {
<a class="jxr_linenumber" name="898" href="#898">898</a>                 System.arraycopy(window, w_size, window, 0, w_size);
<a class="jxr_linenumber" name="899" href="#899">899</a>                 match_start -= w_size;
<a class="jxr_linenumber" name="900" href="#900">900</a>                 strstart -= w_size; <em class="jxr_comment">// we now have strstart &gt;= MAX_DIST</em>
<a class="jxr_linenumber" name="901" href="#901">901</a>                 block_start -= w_size;
<a class="jxr_linenumber" name="902" href="#902">902</a> 
<a class="jxr_linenumber" name="903" href="#903">903</a>                 <em class="jxr_comment">// Slide the hash table (could be avoided with 32 bit values</em>
<a class="jxr_linenumber" name="904" href="#904">904</a>                 <em class="jxr_comment">// at the expense of memory usage). We slide even when level == 0</em>
<a class="jxr_linenumber" name="905" href="#905">905</a>                 <em class="jxr_comment">// to keep the hash table consistent if we switch back to level &gt; 0</em>
<a class="jxr_linenumber" name="906" href="#906">906</a>                 <em class="jxr_comment">// later. (Using level 0 permanently is not an optimal usage of</em>
<a class="jxr_linenumber" name="907" href="#907">907</a>                 <em class="jxr_comment">// zlib, so we don't care about this pathological case.)</em>
<a class="jxr_linenumber" name="908" href="#908">908</a> 
<a class="jxr_linenumber" name="909" href="#909">909</a>                 n = hash_size;
<a class="jxr_linenumber" name="910" href="#910">910</a>                 p = n;
<a class="jxr_linenumber" name="911" href="#911">911</a>                 <strong class="jxr_keyword">do</strong> {
<a class="jxr_linenumber" name="912" href="#912">912</a>                     m = head[-- p] &amp; 0xffff;
<a class="jxr_linenumber" name="913" href="#913">913</a>                     head[p] = m &gt;= w_size? (<strong class="jxr_keyword">short</strong>) (m - w_size) : 0;
<a class="jxr_linenumber" name="914" href="#914">914</a>                 } <strong class="jxr_keyword">while</strong> (-- n != 0);
<a class="jxr_linenumber" name="915" href="#915">915</a> 
<a class="jxr_linenumber" name="916" href="#916">916</a>                 n = w_size;
<a class="jxr_linenumber" name="917" href="#917">917</a>                 p = n;
<a class="jxr_linenumber" name="918" href="#918">918</a>                 <strong class="jxr_keyword">do</strong> {
<a class="jxr_linenumber" name="919" href="#919">919</a>                     m = prev[-- p] &amp; 0xffff;
<a class="jxr_linenumber" name="920" href="#920">920</a>                     prev[p] = m &gt;= w_size? (<strong class="jxr_keyword">short</strong>) (m - w_size) : 0;
<a class="jxr_linenumber" name="921" href="#921">921</a>                     <em class="jxr_comment">// If n is not on any hash chain, prev[n] is garbage but</em>
<a class="jxr_linenumber" name="922" href="#922">922</a>                     <em class="jxr_comment">// its value will never be used.</em>
<a class="jxr_linenumber" name="923" href="#923">923</a>                 } <strong class="jxr_keyword">while</strong> (-- n != 0);
<a class="jxr_linenumber" name="924" href="#924">924</a>                 more += w_size;
<a class="jxr_linenumber" name="925" href="#925">925</a>             }
<a class="jxr_linenumber" name="926" href="#926">926</a> 
<a class="jxr_linenumber" name="927" href="#927">927</a>             <strong class="jxr_keyword">if</strong> (strm.avail_in == 0) {
<a class="jxr_linenumber" name="928" href="#928">928</a>                 <strong class="jxr_keyword">return</strong>;
<a class="jxr_linenumber" name="929" href="#929">929</a>             }
<a class="jxr_linenumber" name="930" href="#930">930</a> 
<a class="jxr_linenumber" name="931" href="#931">931</a>             <em class="jxr_comment">// If there was no sliding:</em>
<a class="jxr_linenumber" name="932" href="#932">932</a>             <em class="jxr_comment">//    strstart &lt;= WSIZE+MAX_DIST-1 &amp;&amp; lookahead &lt;= MIN_LOOKAHEAD - 1 &amp;&amp;</em>
<a class="jxr_linenumber" name="933" href="#933">933</a>             <em class="jxr_comment">//    more == window_size - lookahead - strstart</em>
<a class="jxr_linenumber" name="934" href="#934">934</a>             <em class="jxr_comment">// =&gt; more &gt;= window_size - (MIN_LOOKAHEAD-1 + WSIZE + MAX_DIST-1)</em>
<a class="jxr_linenumber" name="935" href="#935">935</a>             <em class="jxr_comment">// =&gt; more &gt;= window_size - 2*WSIZE + 2</em>
<a class="jxr_linenumber" name="936" href="#936">936</a>             <em class="jxr_comment">// In the BIG_MEM or MMAP case (not yet supported),</em>
<a class="jxr_linenumber" name="937" href="#937">937</a>             <em class="jxr_comment">//   window_size == input_size + MIN_LOOKAHEAD  &amp;&amp;</em>
<a class="jxr_linenumber" name="938" href="#938">938</a>             <em class="jxr_comment">//   strstart + s-&gt;lookahead &lt;= input_size =&gt; more &gt;= MIN_LOOKAHEAD.</em>
<a class="jxr_linenumber" name="939" href="#939">939</a>             <em class="jxr_comment">// Otherwise, window_size == 2*WSIZE so more &gt;= 2.</em>
<a class="jxr_linenumber" name="940" href="#940">940</a>             <em class="jxr_comment">// If there was sliding, more &gt;= WSIZE. So in all cases, more &gt;= 2.</em>
<a class="jxr_linenumber" name="941" href="#941">941</a> 
<a class="jxr_linenumber" name="942" href="#942">942</a>             n = strm.read_buf(window, strstart + lookahead, more);
<a class="jxr_linenumber" name="943" href="#943">943</a>             lookahead += n;
<a class="jxr_linenumber" name="944" href="#944">944</a> 
<a class="jxr_linenumber" name="945" href="#945">945</a>             <em class="jxr_comment">// Initialize the hash value now that we have some input:</em>
<a class="jxr_linenumber" name="946" href="#946">946</a>             <strong class="jxr_keyword">if</strong> (lookahead &gt;= MIN_MATCH) {
<a class="jxr_linenumber" name="947" href="#947">947</a>                 ins_h = window[strstart] &amp; 0xff;
<a class="jxr_linenumber" name="948" href="#948">948</a>                 ins_h = (ins_h &lt;&lt; hash_shift ^ window[strstart + 1] &amp; 0xff) &amp;
<a class="jxr_linenumber" name="949" href="#949">949</a>                         hash_mask;
<a class="jxr_linenumber" name="950" href="#950">950</a>             }
<a class="jxr_linenumber" name="951" href="#951">951</a>             <em class="jxr_comment">// If the whole input has less than MIN_MATCH bytes, ins_h is garbage,</em>
<a class="jxr_linenumber" name="952" href="#952">952</a>             <em class="jxr_comment">// but this is not important since only literal bytes will be emitted.</em>
<a class="jxr_linenumber" name="953" href="#953">953</a>         } <strong class="jxr_keyword">while</strong> (lookahead &lt; MIN_LOOKAHEAD &amp;&amp; strm.avail_in != 0);
<a class="jxr_linenumber" name="954" href="#954">954</a>     }
<a class="jxr_linenumber" name="955" href="#955">955</a> 
<a class="jxr_linenumber" name="956" href="#956">956</a>     <em class="jxr_comment">// Compress as much as possible from the input stream, return the current</em>
<a class="jxr_linenumber" name="957" href="#957">957</a>     <em class="jxr_comment">// block state.</em>
<a class="jxr_linenumber" name="958" href="#958">958</a>     <em class="jxr_comment">// This function does not perform lazy evaluation of matches and inserts</em>
<a class="jxr_linenumber" name="959" href="#959">959</a>     <em class="jxr_comment">// new strings in the dictionary only for unmatched strings or for short</em>
<a class="jxr_linenumber" name="960" href="#960">960</a>     <em class="jxr_comment">// matches. It is used only for the fast compression options.</em>
<a class="jxr_linenumber" name="961" href="#961">961</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> deflate_fast(<strong class="jxr_keyword">int</strong> flush) {
<a class="jxr_linenumber" name="962" href="#962">962</a>         <em class="jxr_comment">//    short hash_head = 0; // head of the hash chain</em>
<a class="jxr_linenumber" name="963" href="#963">963</a>         <strong class="jxr_keyword">int</strong> hash_head = 0; <em class="jxr_comment">// head of the hash chain</em>
<a class="jxr_linenumber" name="964" href="#964">964</a>         <strong class="jxr_keyword">boolean</strong> bflush; <em class="jxr_comment">// set if current block must be flushed</em>
<a class="jxr_linenumber" name="965" href="#965">965</a> 
<a class="jxr_linenumber" name="966" href="#966">966</a>         <strong class="jxr_keyword">while</strong> (<strong class="jxr_keyword">true</strong>) {
<a class="jxr_linenumber" name="967" href="#967">967</a>             <em class="jxr_comment">// Make sure that we always have enough lookahead, except</em>
<a class="jxr_linenumber" name="968" href="#968">968</a>             <em class="jxr_comment">// at the end of the input file. We need MAX_MATCH bytes</em>
<a class="jxr_linenumber" name="969" href="#969">969</a>             <em class="jxr_comment">// for the next match, plus MIN_MATCH bytes to insert the</em>
<a class="jxr_linenumber" name="970" href="#970">970</a>             <em class="jxr_comment">// string following the next match.</em>
<a class="jxr_linenumber" name="971" href="#971">971</a>             <strong class="jxr_keyword">if</strong> (lookahead &lt; MIN_LOOKAHEAD) {
<a class="jxr_linenumber" name="972" href="#972">972</a>                 fill_window();
<a class="jxr_linenumber" name="973" href="#973">973</a>                 <strong class="jxr_keyword">if</strong> (lookahead &lt; MIN_LOOKAHEAD &amp;&amp; flush == JZlib.Z_NO_FLUSH) {
<a class="jxr_linenumber" name="974" href="#974">974</a>                     <strong class="jxr_keyword">return</strong> NeedMore;
<a class="jxr_linenumber" name="975" href="#975">975</a>                 }
<a class="jxr_linenumber" name="976" href="#976">976</a>                 <strong class="jxr_keyword">if</strong> (lookahead == 0) {
<a class="jxr_linenumber" name="977" href="#977">977</a>                     <strong class="jxr_keyword">break</strong>; <em class="jxr_comment">// flush the current block</em>
<a class="jxr_linenumber" name="978" href="#978">978</a>                 }
<a class="jxr_linenumber" name="979" href="#979">979</a>             }
<a class="jxr_linenumber" name="980" href="#980">980</a> 
<a class="jxr_linenumber" name="981" href="#981">981</a>             <em class="jxr_comment">// Insert the string window[strstart .. strstart+2] in the</em>
<a class="jxr_linenumber" name="982" href="#982">982</a>             <em class="jxr_comment">// dictionary, and set hash_head to the head of the hash chain:</em>
<a class="jxr_linenumber" name="983" href="#983">983</a>             <strong class="jxr_keyword">if</strong> (lookahead &gt;= MIN_MATCH) {
<a class="jxr_linenumber" name="984" href="#984">984</a>                 ins_h = (ins_h &lt;&lt; hash_shift ^ window[strstart + MIN_MATCH - 1] &amp; 0xff) &amp;
<a class="jxr_linenumber" name="985" href="#985">985</a>                         hash_mask;
<a class="jxr_linenumber" name="986" href="#986">986</a> 
<a class="jxr_linenumber" name="987" href="#987">987</a>                 <em class="jxr_comment">// prev[strstart&amp;w_mask]=hash_head=head[ins_h];</em>
<a class="jxr_linenumber" name="988" href="#988">988</a>                 hash_head = head[ins_h] &amp; 0xffff;
<a class="jxr_linenumber" name="989" href="#989">989</a>                 prev[strstart &amp; w_mask] = head[ins_h];
<a class="jxr_linenumber" name="990" href="#990">990</a>                 head[ins_h] = (<strong class="jxr_keyword">short</strong>) strstart;
<a class="jxr_linenumber" name="991" href="#991">991</a>             }
<a class="jxr_linenumber" name="992" href="#992">992</a> 
<a class="jxr_linenumber" name="993" href="#993">993</a>             <em class="jxr_comment">// Find the longest match, discarding those &lt;= prev_length.</em>
<a class="jxr_linenumber" name="994" href="#994">994</a>             <em class="jxr_comment">// At this point we have always match_length &lt; MIN_MATCH</em>
<a class="jxr_linenumber" name="995" href="#995">995</a> 
<a class="jxr_linenumber" name="996" href="#996">996</a>             <strong class="jxr_keyword">if</strong> (hash_head != 0L &amp;&amp;
<a class="jxr_linenumber" name="997" href="#997">997</a>                     (strstart - hash_head &amp; 0xffff) &lt;= w_size - MIN_LOOKAHEAD) {
<a class="jxr_linenumber" name="998" href="#998">998</a>                 <em class="jxr_comment">// To simplify the code, we prevent matches with the string</em>
<a class="jxr_linenumber" name="999" href="#999">999</a>                 <em class="jxr_comment">// of window index 0 (in particular we have to avoid a match</em>
<a class="jxr_linenumber" name="1000" href="#1000">1000</a>                 <em class="jxr_comment">// of the string with itself at the start of the input file).</em>
<a class="jxr_linenumber" name="1001" href="#1001">1001</a>                 <strong class="jxr_keyword">if</strong> (strategy != JZlib.Z_HUFFMAN_ONLY) {
<a class="jxr_linenumber" name="1002" href="#1002">1002</a>                     match_length = longest_match(hash_head);
<a class="jxr_linenumber" name="1003" href="#1003">1003</a>                 }
<a class="jxr_linenumber" name="1004" href="#1004">1004</a>                 <em class="jxr_comment">// longest_match() sets match_start</em>
<a class="jxr_linenumber" name="1005" href="#1005">1005</a>             }
<a class="jxr_linenumber" name="1006" href="#1006">1006</a>             <strong class="jxr_keyword">if</strong> (match_length &gt;= MIN_MATCH) {
<a class="jxr_linenumber" name="1007" href="#1007">1007</a>                 <em class="jxr_comment">//        check_match(strstart, match_start, match_length);</em>
<a class="jxr_linenumber" name="1008" href="#1008">1008</a> 
<a class="jxr_linenumber" name="1009" href="#1009">1009</a>                 bflush = _tr_tally(strstart - match_start, match_length -
<a class="jxr_linenumber" name="1010" href="#1010">1010</a>                         MIN_MATCH);
<a class="jxr_linenumber" name="1011" href="#1011">1011</a> 
<a class="jxr_linenumber" name="1012" href="#1012">1012</a>                 lookahead -= match_length;
<a class="jxr_linenumber" name="1013" href="#1013">1013</a> 
<a class="jxr_linenumber" name="1014" href="#1014">1014</a>                 <em class="jxr_comment">// Insert new strings in the hash table only if the match length</em>
<a class="jxr_linenumber" name="1015" href="#1015">1015</a>                 <em class="jxr_comment">// is not too large. This saves time but degrades compression.</em>
<a class="jxr_linenumber" name="1016" href="#1016">1016</a>                 <strong class="jxr_keyword">if</strong> (match_length &lt;= max_lazy_match &amp;&amp; lookahead &gt;= MIN_MATCH) {
<a class="jxr_linenumber" name="1017" href="#1017">1017</a>                     match_length --; <em class="jxr_comment">// string at strstart already in hash table</em>
<a class="jxr_linenumber" name="1018" href="#1018">1018</a>                     <strong class="jxr_keyword">do</strong> {
<a class="jxr_linenumber" name="1019" href="#1019">1019</a>                         strstart ++;
<a class="jxr_linenumber" name="1020" href="#1020">1020</a> 
<a class="jxr_linenumber" name="1021" href="#1021">1021</a>                         ins_h = (ins_h &lt;&lt; hash_shift ^ window[strstart +
<a class="jxr_linenumber" name="1022" href="#1022">1022</a>                                 MIN_MATCH - 1] &amp; 0xff) &amp;
<a class="jxr_linenumber" name="1023" href="#1023">1023</a>                                 hash_mask;
<a class="jxr_linenumber" name="1024" href="#1024">1024</a>                         <em class="jxr_comment">//        prev[strstart&amp;w_mask]=hash_head=head[ins_h];</em>
<a class="jxr_linenumber" name="1025" href="#1025">1025</a>                         hash_head = head[ins_h] &amp; 0xffff;
<a class="jxr_linenumber" name="1026" href="#1026">1026</a>                         prev[strstart &amp; w_mask] = head[ins_h];
<a class="jxr_linenumber" name="1027" href="#1027">1027</a>                         head[ins_h] = (<strong class="jxr_keyword">short</strong>) strstart;
<a class="jxr_linenumber" name="1028" href="#1028">1028</a> 
<a class="jxr_linenumber" name="1029" href="#1029">1029</a>                         <em class="jxr_comment">// strstart never exceeds WSIZE-MAX_MATCH, so there are</em>
<a class="jxr_linenumber" name="1030" href="#1030">1030</a>                         <em class="jxr_comment">// always MIN_MATCH bytes ahead.</em>
<a class="jxr_linenumber" name="1031" href="#1031">1031</a>                     } <strong class="jxr_keyword">while</strong> (-- match_length != 0);
<a class="jxr_linenumber" name="1032" href="#1032">1032</a>                     strstart ++;
<a class="jxr_linenumber" name="1033" href="#1033">1033</a>                 } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="1034" href="#1034">1034</a>                     strstart += match_length;
<a class="jxr_linenumber" name="1035" href="#1035">1035</a>                     match_length = 0;
<a class="jxr_linenumber" name="1036" href="#1036">1036</a>                     ins_h = window[strstart] &amp; 0xff;
<a class="jxr_linenumber" name="1037" href="#1037">1037</a> 
<a class="jxr_linenumber" name="1038" href="#1038">1038</a>                     ins_h = (ins_h &lt;&lt; hash_shift ^ window[strstart + 1] &amp; 0xff) &amp;
<a class="jxr_linenumber" name="1039" href="#1039">1039</a>                             hash_mask;
<a class="jxr_linenumber" name="1040" href="#1040">1040</a>                     <em class="jxr_comment">// If lookahead &lt; MIN_MATCH, ins_h is garbage, but it does not</em>
<a class="jxr_linenumber" name="1041" href="#1041">1041</a>                     <em class="jxr_comment">// matter since it will be recomputed at next deflate call.</em>
<a class="jxr_linenumber" name="1042" href="#1042">1042</a>                 }
<a class="jxr_linenumber" name="1043" href="#1043">1043</a>             } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="1044" href="#1044">1044</a>                 <em class="jxr_comment">// No match, output a literal byte</em>
<a class="jxr_linenumber" name="1045" href="#1045">1045</a> 
<a class="jxr_linenumber" name="1046" href="#1046">1046</a>                 bflush = _tr_tally(0, window[strstart] &amp; 0xff);
<a class="jxr_linenumber" name="1047" href="#1047">1047</a>                 lookahead --;
<a class="jxr_linenumber" name="1048" href="#1048">1048</a>                 strstart ++;
<a class="jxr_linenumber" name="1049" href="#1049">1049</a>             }
<a class="jxr_linenumber" name="1050" href="#1050">1050</a>             <strong class="jxr_keyword">if</strong> (bflush) {
<a class="jxr_linenumber" name="1051" href="#1051">1051</a> 
<a class="jxr_linenumber" name="1052" href="#1052">1052</a>                 flush_block_only(false);
<a class="jxr_linenumber" name="1053" href="#1053">1053</a>                 <strong class="jxr_keyword">if</strong> (strm.avail_out == 0) {
<a class="jxr_linenumber" name="1054" href="#1054">1054</a>                     <strong class="jxr_keyword">return</strong> NeedMore;
<a class="jxr_linenumber" name="1055" href="#1055">1055</a>                 }
<a class="jxr_linenumber" name="1056" href="#1056">1056</a>             }
<a class="jxr_linenumber" name="1057" href="#1057">1057</a>         }
<a class="jxr_linenumber" name="1058" href="#1058">1058</a> 
<a class="jxr_linenumber" name="1059" href="#1059">1059</a>         flush_block_only(flush == JZlib.Z_FINISH);
<a class="jxr_linenumber" name="1060" href="#1060">1060</a>         <strong class="jxr_keyword">if</strong> (strm.avail_out == 0) {
<a class="jxr_linenumber" name="1061" href="#1061">1061</a>             <strong class="jxr_keyword">if</strong> (flush == JZlib.Z_FINISH) {
<a class="jxr_linenumber" name="1062" href="#1062">1062</a>                 <strong class="jxr_keyword">return</strong> FinishStarted;
<a class="jxr_linenumber" name="1063" href="#1063">1063</a>             } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="1064" href="#1064">1064</a>                 <strong class="jxr_keyword">return</strong> NeedMore;
<a class="jxr_linenumber" name="1065" href="#1065">1065</a>             }
<a class="jxr_linenumber" name="1066" href="#1066">1066</a>         }
<a class="jxr_linenumber" name="1067" href="#1067">1067</a>         <strong class="jxr_keyword">return</strong> flush == JZlib.Z_FINISH? FinishDone : BlockDone;
<a class="jxr_linenumber" name="1068" href="#1068">1068</a>     }
<a class="jxr_linenumber" name="1069" href="#1069">1069</a> 
<a class="jxr_linenumber" name="1070" href="#1070">1070</a>     <em class="jxr_comment">// Same as above, but achieves better compression. We use a lazy</em>
<a class="jxr_linenumber" name="1071" href="#1071">1071</a>     <em class="jxr_comment">// evaluation for matches: a match is finally adopted only if there is</em>
<a class="jxr_linenumber" name="1072" href="#1072">1072</a>     <em class="jxr_comment">// no better match at the next window position.</em>
<a class="jxr_linenumber" name="1073" href="#1073">1073</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> deflate_slow(<strong class="jxr_keyword">int</strong> flush) {
<a class="jxr_linenumber" name="1074" href="#1074">1074</a>         <em class="jxr_comment">//    short hash_head = 0;    // head of hash chain</em>
<a class="jxr_linenumber" name="1075" href="#1075">1075</a>         <strong class="jxr_keyword">int</strong> hash_head = 0; <em class="jxr_comment">// head of hash chain</em>
<a class="jxr_linenumber" name="1076" href="#1076">1076</a>         <strong class="jxr_keyword">boolean</strong> bflush; <em class="jxr_comment">// set if current block must be flushed</em>
<a class="jxr_linenumber" name="1077" href="#1077">1077</a> 
<a class="jxr_linenumber" name="1078" href="#1078">1078</a>         <em class="jxr_comment">// Process the input block.</em>
<a class="jxr_linenumber" name="1079" href="#1079">1079</a>         <strong class="jxr_keyword">while</strong> (<strong class="jxr_keyword">true</strong>) {
<a class="jxr_linenumber" name="1080" href="#1080">1080</a>             <em class="jxr_comment">// Make sure that we always have enough lookahead, except</em>
<a class="jxr_linenumber" name="1081" href="#1081">1081</a>             <em class="jxr_comment">// at the end of the input file. We need MAX_MATCH bytes</em>
<a class="jxr_linenumber" name="1082" href="#1082">1082</a>             <em class="jxr_comment">// for the next match, plus MIN_MATCH bytes to insert the</em>
<a class="jxr_linenumber" name="1083" href="#1083">1083</a>             <em class="jxr_comment">// string following the next match.</em>
<a class="jxr_linenumber" name="1084" href="#1084">1084</a> 
<a class="jxr_linenumber" name="1085" href="#1085">1085</a>             <strong class="jxr_keyword">if</strong> (lookahead &lt; MIN_LOOKAHEAD) {
<a class="jxr_linenumber" name="1086" href="#1086">1086</a>                 fill_window();
<a class="jxr_linenumber" name="1087" href="#1087">1087</a>                 <strong class="jxr_keyword">if</strong> (lookahead &lt; MIN_LOOKAHEAD &amp;&amp; flush == JZlib.Z_NO_FLUSH) {
<a class="jxr_linenumber" name="1088" href="#1088">1088</a>                     <strong class="jxr_keyword">return</strong> NeedMore;
<a class="jxr_linenumber" name="1089" href="#1089">1089</a>                 }
<a class="jxr_linenumber" name="1090" href="#1090">1090</a>                 <strong class="jxr_keyword">if</strong> (lookahead == 0) {
<a class="jxr_linenumber" name="1091" href="#1091">1091</a>                     <strong class="jxr_keyword">break</strong>; <em class="jxr_comment">// flush the current block</em>
<a class="jxr_linenumber" name="1092" href="#1092">1092</a>                 }
<a class="jxr_linenumber" name="1093" href="#1093">1093</a>             }
<a class="jxr_linenumber" name="1094" href="#1094">1094</a> 
<a class="jxr_linenumber" name="1095" href="#1095">1095</a>             <em class="jxr_comment">// Insert the string window[strstart .. strstart+2] in the</em>
<a class="jxr_linenumber" name="1096" href="#1096">1096</a>             <em class="jxr_comment">// dictionary, and set hash_head to the head of the hash chain:</em>
<a class="jxr_linenumber" name="1097" href="#1097">1097</a> 
<a class="jxr_linenumber" name="1098" href="#1098">1098</a>             <strong class="jxr_keyword">if</strong> (lookahead &gt;= MIN_MATCH) {
<a class="jxr_linenumber" name="1099" href="#1099">1099</a>                 ins_h = (ins_h &lt;&lt; hash_shift ^ window[strstart + MIN_MATCH - 1] &amp; 0xff) &amp;
<a class="jxr_linenumber" name="1100" href="#1100">1100</a>                         hash_mask;
<a class="jxr_linenumber" name="1101" href="#1101">1101</a>                 <em class="jxr_comment">//    prev[strstart&amp;w_mask]=hash_head=head[ins_h];</em>
<a class="jxr_linenumber" name="1102" href="#1102">1102</a>                 hash_head = head[ins_h] &amp; 0xffff;
<a class="jxr_linenumber" name="1103" href="#1103">1103</a>                 prev[strstart &amp; w_mask] = head[ins_h];
<a class="jxr_linenumber" name="1104" href="#1104">1104</a>                 head[ins_h] = (<strong class="jxr_keyword">short</strong>) strstart;
<a class="jxr_linenumber" name="1105" href="#1105">1105</a>             }
<a class="jxr_linenumber" name="1106" href="#1106">1106</a> 
<a class="jxr_linenumber" name="1107" href="#1107">1107</a>             <em class="jxr_comment">// Find the longest match, discarding those &lt;= prev_length.</em>
<a class="jxr_linenumber" name="1108" href="#1108">1108</a>             prev_length = match_length;
<a class="jxr_linenumber" name="1109" href="#1109">1109</a>             prev_match = match_start;
<a class="jxr_linenumber" name="1110" href="#1110">1110</a>             match_length = MIN_MATCH - 1;
<a class="jxr_linenumber" name="1111" href="#1111">1111</a> 
<a class="jxr_linenumber" name="1112" href="#1112">1112</a>             <strong class="jxr_keyword">if</strong> (hash_head != 0 &amp;&amp; prev_length &lt; max_lazy_match &amp;&amp;
<a class="jxr_linenumber" name="1113" href="#1113">1113</a>                     (strstart - hash_head &amp; 0xffff) &lt;= w_size - MIN_LOOKAHEAD) {
<a class="jxr_linenumber" name="1114" href="#1114">1114</a>                 <em class="jxr_comment">// To simplify the code, we prevent matches with the string</em>
<a class="jxr_linenumber" name="1115" href="#1115">1115</a>                 <em class="jxr_comment">// of window index 0 (in particular we have to avoid a match</em>
<a class="jxr_linenumber" name="1116" href="#1116">1116</a>                 <em class="jxr_comment">// of the string with itself at the start of the input file).</em>
<a class="jxr_linenumber" name="1117" href="#1117">1117</a> 
<a class="jxr_linenumber" name="1118" href="#1118">1118</a>                 <strong class="jxr_keyword">if</strong> (strategy != JZlib.Z_HUFFMAN_ONLY) {
<a class="jxr_linenumber" name="1119" href="#1119">1119</a>                     match_length = longest_match(hash_head);
<a class="jxr_linenumber" name="1120" href="#1120">1120</a>                 }
<a class="jxr_linenumber" name="1121" href="#1121">1121</a>                 <em class="jxr_comment">// longest_match() sets match_start</em>
<a class="jxr_linenumber" name="1122" href="#1122">1122</a> 
<a class="jxr_linenumber" name="1123" href="#1123">1123</a>                 <strong class="jxr_keyword">if</strong> (match_length &lt;= 5 &amp;&amp;
<a class="jxr_linenumber" name="1124" href="#1124">1124</a>                         (strategy == JZlib.Z_FILTERED || match_length == MIN_MATCH &amp;&amp;
<a class="jxr_linenumber" name="1125" href="#1125">1125</a>                                 strstart - match_start &gt; 4096)) {
<a class="jxr_linenumber" name="1126" href="#1126">1126</a> 
<a class="jxr_linenumber" name="1127" href="#1127">1127</a>                     <em class="jxr_comment">// If prev_match is also MIN_MATCH, match_start is garbage</em>
<a class="jxr_linenumber" name="1128" href="#1128">1128</a>                     <em class="jxr_comment">// but we will ignore the current match anyway.</em>
<a class="jxr_linenumber" name="1129" href="#1129">1129</a>                     match_length = MIN_MATCH - 1;
<a class="jxr_linenumber" name="1130" href="#1130">1130</a>                 }
<a class="jxr_linenumber" name="1131" href="#1131">1131</a>             }
<a class="jxr_linenumber" name="1132" href="#1132">1132</a> 
<a class="jxr_linenumber" name="1133" href="#1133">1133</a>             <em class="jxr_comment">// If there was a match at the previous step and the current</em>
<a class="jxr_linenumber" name="1134" href="#1134">1134</a>             <em class="jxr_comment">// match is not better, output the previous match:</em>
<a class="jxr_linenumber" name="1135" href="#1135">1135</a>             <strong class="jxr_keyword">if</strong> (prev_length &gt;= MIN_MATCH &amp;&amp; match_length &lt;= prev_length) {
<a class="jxr_linenumber" name="1136" href="#1136">1136</a>                 <strong class="jxr_keyword">int</strong> max_insert = strstart + lookahead - MIN_MATCH;
<a class="jxr_linenumber" name="1137" href="#1137">1137</a>                 <em class="jxr_comment">// Do not insert strings in hash table beyond this.</em>
<a class="jxr_linenumber" name="1138" href="#1138">1138</a> 
<a class="jxr_linenumber" name="1139" href="#1139">1139</a>                 <em class="jxr_comment">//          check_match(strstart-1, prev_match, prev_length);</em>
<a class="jxr_linenumber" name="1140" href="#1140">1140</a> 
<a class="jxr_linenumber" name="1141" href="#1141">1141</a>                 bflush = _tr_tally(strstart - 1 - prev_match, prev_length -
<a class="jxr_linenumber" name="1142" href="#1142">1142</a>                         MIN_MATCH);
<a class="jxr_linenumber" name="1143" href="#1143">1143</a> 
<a class="jxr_linenumber" name="1144" href="#1144">1144</a>                 <em class="jxr_comment">// Insert in hash table all strings up to the end of the match.</em>
<a class="jxr_linenumber" name="1145" href="#1145">1145</a>                 <em class="jxr_comment">// strstart-1 and strstart are already inserted. If there is not</em>
<a class="jxr_linenumber" name="1146" href="#1146">1146</a>                 <em class="jxr_comment">// enough lookahead, the last two strings are not inserted in</em>
<a class="jxr_linenumber" name="1147" href="#1147">1147</a>                 <em class="jxr_comment">// the hash table.</em>
<a class="jxr_linenumber" name="1148" href="#1148">1148</a>                 lookahead -= prev_length - 1;
<a class="jxr_linenumber" name="1149" href="#1149">1149</a>                 prev_length -= 2;
<a class="jxr_linenumber" name="1150" href="#1150">1150</a>                 <strong class="jxr_keyword">do</strong> {
<a class="jxr_linenumber" name="1151" href="#1151">1151</a>                     <strong class="jxr_keyword">if</strong> (++ strstart &lt;= max_insert) {
<a class="jxr_linenumber" name="1152" href="#1152">1152</a>                         ins_h = (ins_h &lt;&lt; hash_shift ^ window[strstart +
<a class="jxr_linenumber" name="1153" href="#1153">1153</a>                                 MIN_MATCH - 1] &amp; 0xff) &amp;
<a class="jxr_linenumber" name="1154" href="#1154">1154</a>                                 hash_mask;
<a class="jxr_linenumber" name="1155" href="#1155">1155</a>                         <em class="jxr_comment">//prev[strstart&amp;w_mask]=hash_head=head[ins_h];</em>
<a class="jxr_linenumber" name="1156" href="#1156">1156</a>                         hash_head = head[ins_h] &amp; 0xffff;
<a class="jxr_linenumber" name="1157" href="#1157">1157</a>                         prev[strstart &amp; w_mask] = head[ins_h];
<a class="jxr_linenumber" name="1158" href="#1158">1158</a>                         head[ins_h] = (<strong class="jxr_keyword">short</strong>) strstart;
<a class="jxr_linenumber" name="1159" href="#1159">1159</a>                     }
<a class="jxr_linenumber" name="1160" href="#1160">1160</a>                 } <strong class="jxr_keyword">while</strong> (-- prev_length != 0);
<a class="jxr_linenumber" name="1161" href="#1161">1161</a>                 match_available = 0;
<a class="jxr_linenumber" name="1162" href="#1162">1162</a>                 match_length = MIN_MATCH - 1;
<a class="jxr_linenumber" name="1163" href="#1163">1163</a>                 strstart ++;
<a class="jxr_linenumber" name="1164" href="#1164">1164</a> 
<a class="jxr_linenumber" name="1165" href="#1165">1165</a>                 <strong class="jxr_keyword">if</strong> (bflush) {
<a class="jxr_linenumber" name="1166" href="#1166">1166</a>                     flush_block_only(false);
<a class="jxr_linenumber" name="1167" href="#1167">1167</a>                     <strong class="jxr_keyword">if</strong> (strm.avail_out == 0) {
<a class="jxr_linenumber" name="1168" href="#1168">1168</a>                         <strong class="jxr_keyword">return</strong> NeedMore;
<a class="jxr_linenumber" name="1169" href="#1169">1169</a>                     }
<a class="jxr_linenumber" name="1170" href="#1170">1170</a>                 }
<a class="jxr_linenumber" name="1171" href="#1171">1171</a>             } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (match_available != 0) {
<a class="jxr_linenumber" name="1172" href="#1172">1172</a> 
<a class="jxr_linenumber" name="1173" href="#1173">1173</a>                 <em class="jxr_comment">// If there was no match at the previous position, output a</em>
<a class="jxr_linenumber" name="1174" href="#1174">1174</a>                 <em class="jxr_comment">// single literal. If there was a match but the current match</em>
<a class="jxr_linenumber" name="1175" href="#1175">1175</a>                 <em class="jxr_comment">// is longer, truncate the previous match to a single literal.</em>
<a class="jxr_linenumber" name="1176" href="#1176">1176</a> 
<a class="jxr_linenumber" name="1177" href="#1177">1177</a>                 bflush = _tr_tally(0, window[strstart - 1] &amp; 0xff);
<a class="jxr_linenumber" name="1178" href="#1178">1178</a> 
<a class="jxr_linenumber" name="1179" href="#1179">1179</a>                 <strong class="jxr_keyword">if</strong> (bflush) {
<a class="jxr_linenumber" name="1180" href="#1180">1180</a>                     flush_block_only(false);
<a class="jxr_linenumber" name="1181" href="#1181">1181</a>                 }
<a class="jxr_linenumber" name="1182" href="#1182">1182</a>                 strstart ++;
<a class="jxr_linenumber" name="1183" href="#1183">1183</a>                 lookahead --;
<a class="jxr_linenumber" name="1184" href="#1184">1184</a>                 <strong class="jxr_keyword">if</strong> (strm.avail_out == 0) {
<a class="jxr_linenumber" name="1185" href="#1185">1185</a>                     <strong class="jxr_keyword">return</strong> NeedMore;
<a class="jxr_linenumber" name="1186" href="#1186">1186</a>                 }
<a class="jxr_linenumber" name="1187" href="#1187">1187</a>             } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="1188" href="#1188">1188</a>                 <em class="jxr_comment">// There is no previous match to compare with, wait for</em>
<a class="jxr_linenumber" name="1189" href="#1189">1189</a>                 <em class="jxr_comment">// the next step to decide.</em>
<a class="jxr_linenumber" name="1190" href="#1190">1190</a> 
<a class="jxr_linenumber" name="1191" href="#1191">1191</a>                 match_available = 1;
<a class="jxr_linenumber" name="1192" href="#1192">1192</a>                 strstart ++;
<a class="jxr_linenumber" name="1193" href="#1193">1193</a>                 lookahead --;
<a class="jxr_linenumber" name="1194" href="#1194">1194</a>             }
<a class="jxr_linenumber" name="1195" href="#1195">1195</a>         }
<a class="jxr_linenumber" name="1196" href="#1196">1196</a> 
<a class="jxr_linenumber" name="1197" href="#1197">1197</a>         <strong class="jxr_keyword">if</strong> (match_available != 0) {
<a class="jxr_linenumber" name="1198" href="#1198">1198</a>             _tr_tally(0, window[strstart - 1] &amp; 0xff);
<a class="jxr_linenumber" name="1199" href="#1199">1199</a>             match_available = 0;
<a class="jxr_linenumber" name="1200" href="#1200">1200</a>         }
<a class="jxr_linenumber" name="1201" href="#1201">1201</a>         flush_block_only(flush == JZlib.Z_FINISH);
<a class="jxr_linenumber" name="1202" href="#1202">1202</a> 
<a class="jxr_linenumber" name="1203" href="#1203">1203</a>         <strong class="jxr_keyword">if</strong> (strm.avail_out == 0) {
<a class="jxr_linenumber" name="1204" href="#1204">1204</a>             <strong class="jxr_keyword">if</strong> (flush == JZlib.Z_FINISH) {
<a class="jxr_linenumber" name="1205" href="#1205">1205</a>                 <strong class="jxr_keyword">return</strong> FinishStarted;
<a class="jxr_linenumber" name="1206" href="#1206">1206</a>             } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="1207" href="#1207">1207</a>                 <strong class="jxr_keyword">return</strong> NeedMore;
<a class="jxr_linenumber" name="1208" href="#1208">1208</a>             }
<a class="jxr_linenumber" name="1209" href="#1209">1209</a>         }
<a class="jxr_linenumber" name="1210" href="#1210">1210</a> 
<a class="jxr_linenumber" name="1211" href="#1211">1211</a>         <strong class="jxr_keyword">return</strong> flush == JZlib.Z_FINISH? FinishDone : BlockDone;
<a class="jxr_linenumber" name="1212" href="#1212">1212</a>     }
<a class="jxr_linenumber" name="1213" href="#1213">1213</a> 
<a class="jxr_linenumber" name="1214" href="#1214">1214</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> longest_match(<strong class="jxr_keyword">int</strong> cur_match) {
<a class="jxr_linenumber" name="1215" href="#1215">1215</a>         <strong class="jxr_keyword">int</strong> chain_length = max_chain_length; <em class="jxr_comment">// max hash chain length</em>
<a class="jxr_linenumber" name="1216" href="#1216">1216</a>         <strong class="jxr_keyword">int</strong> scan = strstart; <em class="jxr_comment">// current string</em>
<a class="jxr_linenumber" name="1217" href="#1217">1217</a>         <strong class="jxr_keyword">int</strong> match; <em class="jxr_comment">// matched string</em>
<a class="jxr_linenumber" name="1218" href="#1218">1218</a>         <strong class="jxr_keyword">int</strong> len; <em class="jxr_comment">// length of current match</em>
<a class="jxr_linenumber" name="1219" href="#1219">1219</a>         <strong class="jxr_keyword">int</strong> best_len = prev_length; <em class="jxr_comment">// best match length so far</em>
<a class="jxr_linenumber" name="1220" href="#1220">1220</a>         <strong class="jxr_keyword">int</strong> limit = strstart &gt; w_size - MIN_LOOKAHEAD? strstart -
<a class="jxr_linenumber" name="1221" href="#1221">1221</a>                 (w_size - MIN_LOOKAHEAD) : 0;
<a class="jxr_linenumber" name="1222" href="#1222">1222</a>         <strong class="jxr_keyword">int</strong> nice_match = <strong class="jxr_keyword">this</strong>.nice_match;
<a class="jxr_linenumber" name="1223" href="#1223">1223</a> 
<a class="jxr_linenumber" name="1224" href="#1224">1224</a>         <em class="jxr_comment">// Stop when cur_match becomes &lt;= limit. To simplify the code,</em>
<a class="jxr_linenumber" name="1225" href="#1225">1225</a>         <em class="jxr_comment">// we prevent matches with the string of window index 0.</em>
<a class="jxr_linenumber" name="1226" href="#1226">1226</a> 
<a class="jxr_linenumber" name="1227" href="#1227">1227</a>         <strong class="jxr_keyword">int</strong> wmask = w_mask;
<a class="jxr_linenumber" name="1228" href="#1228">1228</a> 
<a class="jxr_linenumber" name="1229" href="#1229">1229</a>         <strong class="jxr_keyword">int</strong> strend = strstart + MAX_MATCH;
<a class="jxr_linenumber" name="1230" href="#1230">1230</a>         byte scan_end1 = window[scan + best_len - 1];
<a class="jxr_linenumber" name="1231" href="#1231">1231</a>         byte scan_end = window[scan + best_len];
<a class="jxr_linenumber" name="1232" href="#1232">1232</a> 
<a class="jxr_linenumber" name="1233" href="#1233">1233</a>         <em class="jxr_comment">// The code is optimized for HASH_BITS &gt;= 8 and MAX_MATCH-2 multiple of 16.</em>
<a class="jxr_linenumber" name="1234" href="#1234">1234</a>         <em class="jxr_comment">// It is easy to get rid of this optimization if necessary.</em>
<a class="jxr_linenumber" name="1235" href="#1235">1235</a> 
<a class="jxr_linenumber" name="1236" href="#1236">1236</a>         <em class="jxr_comment">// Do not waste too much time if we already have a good match:</em>
<a class="jxr_linenumber" name="1237" href="#1237">1237</a>         <strong class="jxr_keyword">if</strong> (prev_length &gt;= good_match) {
<a class="jxr_linenumber" name="1238" href="#1238">1238</a>             chain_length &gt;&gt;= 2;
<a class="jxr_linenumber" name="1239" href="#1239">1239</a>         }
<a class="jxr_linenumber" name="1240" href="#1240">1240</a> 
<a class="jxr_linenumber" name="1241" href="#1241">1241</a>         <em class="jxr_comment">// Do not look for matches beyond the end of the input. This is necessary</em>
<a class="jxr_linenumber" name="1242" href="#1242">1242</a>         <em class="jxr_comment">// to make deflate deterministic.</em>
<a class="jxr_linenumber" name="1243" href="#1243">1243</a>         <strong class="jxr_keyword">if</strong> (nice_match &gt; lookahead) {
<a class="jxr_linenumber" name="1244" href="#1244">1244</a>             nice_match = lookahead;
<a class="jxr_linenumber" name="1245" href="#1245">1245</a>         }
<a class="jxr_linenumber" name="1246" href="#1246">1246</a> 
<a class="jxr_linenumber" name="1247" href="#1247">1247</a>         <strong class="jxr_keyword">do</strong> {
<a class="jxr_linenumber" name="1248" href="#1248">1248</a>             match = cur_match;
<a class="jxr_linenumber" name="1249" href="#1249">1249</a> 
<a class="jxr_linenumber" name="1250" href="#1250">1250</a>             <em class="jxr_comment">// Skip to next match if the match length cannot increase</em>
<a class="jxr_linenumber" name="1251" href="#1251">1251</a>             <em class="jxr_comment">// or if the match length is less than 2:</em>
<a class="jxr_linenumber" name="1252" href="#1252">1252</a>             <strong class="jxr_keyword">if</strong> (window[match + best_len] != scan_end ||
<a class="jxr_linenumber" name="1253" href="#1253">1253</a>                     window[match + best_len - 1] != scan_end1 ||
<a class="jxr_linenumber" name="1254" href="#1254">1254</a>                     window[match] != window[scan] ||
<a class="jxr_linenumber" name="1255" href="#1255">1255</a>                     window[++ match] != window[scan + 1]) {
<a class="jxr_linenumber" name="1256" href="#1256">1256</a>                 <strong class="jxr_keyword">continue</strong>;
<a class="jxr_linenumber" name="1257" href="#1257">1257</a>             }
<a class="jxr_linenumber" name="1258" href="#1258">1258</a> 
<a class="jxr_linenumber" name="1259" href="#1259">1259</a>             <em class="jxr_comment">// The check at best_len-1 can be removed because it will be made</em>
<a class="jxr_linenumber" name="1260" href="#1260">1260</a>             <em class="jxr_comment">// again later. (This heuristic is not always a win.)</em>
<a class="jxr_linenumber" name="1261" href="#1261">1261</a>             <em class="jxr_comment">// It is not necessary to compare scan[2] and match[2] since they</em>
<a class="jxr_linenumber" name="1262" href="#1262">1262</a>             <em class="jxr_comment">// are always equal when the other bytes match, given that</em>
<a class="jxr_linenumber" name="1263" href="#1263">1263</a>             <em class="jxr_comment">// the hash keys are equal and that HASH_BITS &gt;= 8.</em>
<a class="jxr_linenumber" name="1264" href="#1264">1264</a>             scan += 2;
<a class="jxr_linenumber" name="1265" href="#1265">1265</a>             match ++;
<a class="jxr_linenumber" name="1266" href="#1266">1266</a> 
<a class="jxr_linenumber" name="1267" href="#1267">1267</a>             <em class="jxr_comment">// We check for insufficient lookahead only every 8th comparison;</em>
<a class="jxr_linenumber" name="1268" href="#1268">1268</a>             <em class="jxr_comment">// the 256th check will be made at strstart+258.</em>
<a class="jxr_linenumber" name="1269" href="#1269">1269</a>             <strong class="jxr_keyword">while</strong> (window[++ scan] == window[++ match] &amp;&amp;
<a class="jxr_linenumber" name="1270" href="#1270">1270</a>                     window[++ scan] == window[++ match] &amp;&amp;
<a class="jxr_linenumber" name="1271" href="#1271">1271</a>                     window[++ scan] == window[++ match] &amp;&amp;
<a class="jxr_linenumber" name="1272" href="#1272">1272</a>                     window[++ scan] == window[++ match] &amp;&amp;
<a class="jxr_linenumber" name="1273" href="#1273">1273</a>                     window[++ scan] == window[++ match] &amp;&amp;
<a class="jxr_linenumber" name="1274" href="#1274">1274</a>                     window[++ scan] == window[++ match] &amp;&amp;
<a class="jxr_linenumber" name="1275" href="#1275">1275</a>                     window[++ scan] == window[++ match] &amp;&amp;
<a class="jxr_linenumber" name="1276" href="#1276">1276</a>                     window[++ scan] == window[++ match] &amp;&amp; scan &lt; strend) {
<a class="jxr_linenumber" name="1277" href="#1277">1277</a>                 <strong class="jxr_keyword">continue</strong>;
<a class="jxr_linenumber" name="1278" href="#1278">1278</a>             }
<a class="jxr_linenumber" name="1279" href="#1279">1279</a> 
<a class="jxr_linenumber" name="1280" href="#1280">1280</a>             len = MAX_MATCH - (strend - scan);
<a class="jxr_linenumber" name="1281" href="#1281">1281</a>             scan = strend - MAX_MATCH;
<a class="jxr_linenumber" name="1282" href="#1282">1282</a> 
<a class="jxr_linenumber" name="1283" href="#1283">1283</a>             <strong class="jxr_keyword">if</strong> (len &gt; best_len) {
<a class="jxr_linenumber" name="1284" href="#1284">1284</a>                 match_start = cur_match;
<a class="jxr_linenumber" name="1285" href="#1285">1285</a>                 best_len = len;
<a class="jxr_linenumber" name="1286" href="#1286">1286</a>                 <strong class="jxr_keyword">if</strong> (len &gt;= nice_match) {
<a class="jxr_linenumber" name="1287" href="#1287">1287</a>                     <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="1288" href="#1288">1288</a>                 }
<a class="jxr_linenumber" name="1289" href="#1289">1289</a>                 scan_end1 = window[scan + best_len - 1];
<a class="jxr_linenumber" name="1290" href="#1290">1290</a>                 scan_end = window[scan + best_len];
<a class="jxr_linenumber" name="1291" href="#1291">1291</a>             }
<a class="jxr_linenumber" name="1292" href="#1292">1292</a> 
<a class="jxr_linenumber" name="1293" href="#1293">1293</a>         } <strong class="jxr_keyword">while</strong> ((cur_match = prev[cur_match &amp; wmask] &amp; 0xffff) &gt; limit &amp;&amp;
<a class="jxr_linenumber" name="1294" href="#1294">1294</a>                 -- chain_length != 0);
<a class="jxr_linenumber" name="1295" href="#1295">1295</a> 
<a class="jxr_linenumber" name="1296" href="#1296">1296</a>         <strong class="jxr_keyword">if</strong> (best_len &lt;= lookahead) {
<a class="jxr_linenumber" name="1297" href="#1297">1297</a>             <strong class="jxr_keyword">return</strong> best_len;
<a class="jxr_linenumber" name="1298" href="#1298">1298</a>         }
<a class="jxr_linenumber" name="1299" href="#1299">1299</a>         <strong class="jxr_keyword">return</strong> lookahead;
<a class="jxr_linenumber" name="1300" href="#1300">1300</a>     }
<a class="jxr_linenumber" name="1301" href="#1301">1301</a> 
<a class="jxr_linenumber" name="1302" href="#1302">1302</a>     <strong class="jxr_keyword">int</strong> deflateInit(<a href="../../../../../../org/jboss/netty/util/internal/jzlib/ZStream.html">ZStream</a> strm, <strong class="jxr_keyword">int</strong> level, <strong class="jxr_keyword">int</strong> bits, <a href="../../../../../../org/jboss/netty/util/internal/jzlib/JZlib.html">WrapperType</a> wrapperType) {
<a class="jxr_linenumber" name="1303" href="#1303">1303</a>         <strong class="jxr_keyword">return</strong> deflateInit2(strm, level, JZlib.Z_DEFLATED, bits,
<a class="jxr_linenumber" name="1304" href="#1304">1304</a>                 JZlib.DEF_MEM_LEVEL, JZlib.Z_DEFAULT_STRATEGY, wrapperType);
<a class="jxr_linenumber" name="1305" href="#1305">1305</a>     }
<a class="jxr_linenumber" name="1306" href="#1306">1306</a> 
<a class="jxr_linenumber" name="1307" href="#1307">1307</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> deflateInit2(<a href="../../../../../../org/jboss/netty/util/internal/jzlib/ZStream.html">ZStream</a> strm, <strong class="jxr_keyword">int</strong> level, <strong class="jxr_keyword">int</strong> method, <strong class="jxr_keyword">int</strong> windowBits,
<a class="jxr_linenumber" name="1308" href="#1308">1308</a>             <strong class="jxr_keyword">int</strong> memLevel, <strong class="jxr_keyword">int</strong> strategy, <a href="../../../../../../org/jboss/netty/util/internal/jzlib/JZlib.html">WrapperType</a> wrapperType) {
<a class="jxr_linenumber" name="1309" href="#1309">1309</a> 
<a class="jxr_linenumber" name="1310" href="#1310">1310</a>         <strong class="jxr_keyword">if</strong> (wrapperType == WrapperType.ZLIB_OR_NONE) {
<a class="jxr_linenumber" name="1311" href="#1311">1311</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"ZLIB_OR_NONE allowed only for inflate"</span>);
<a class="jxr_linenumber" name="1312" href="#1312">1312</a>         }
<a class="jxr_linenumber" name="1313" href="#1313">1313</a> 
<a class="jxr_linenumber" name="1314" href="#1314">1314</a>         <em class="jxr_comment">//    byte[] my_version=ZLIB_VERSION;</em>
<a class="jxr_linenumber" name="1315" href="#1315">1315</a> 
<a class="jxr_linenumber" name="1316" href="#1316">1316</a>         <em class="jxr_comment">//</em>
<a class="jxr_linenumber" name="1317" href="#1317">1317</a>         <em class="jxr_comment">//  if (version == null || version[0] != my_version[0]</em>
<a class="jxr_linenumber" name="1318" href="#1318">1318</a>         <em class="jxr_comment">//  || stream_size != sizeof(z_stream)) {</em>
<a class="jxr_linenumber" name="1319" href="#1319">1319</a>         <em class="jxr_comment">//  return Z_VERSION_ERROR;</em>
<a class="jxr_linenumber" name="1320" href="#1320">1320</a>         <em class="jxr_comment">//  }</em>
<a class="jxr_linenumber" name="1321" href="#1321">1321</a> 
<a class="jxr_linenumber" name="1322" href="#1322">1322</a>         strm.msg = <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="1323" href="#1323">1323</a> 
<a class="jxr_linenumber" name="1324" href="#1324">1324</a>         <strong class="jxr_keyword">if</strong> (level == JZlib.Z_DEFAULT_COMPRESSION) {
<a class="jxr_linenumber" name="1325" href="#1325">1325</a>             level = 6;
<a class="jxr_linenumber" name="1326" href="#1326">1326</a>         }
<a class="jxr_linenumber" name="1327" href="#1327">1327</a> 
<a class="jxr_linenumber" name="1328" href="#1328">1328</a>         <strong class="jxr_keyword">if</strong> (windowBits &lt; 0) { <em class="jxr_comment">// undocumented feature: suppress zlib header</em>
<a class="jxr_linenumber" name="1329" href="#1329">1329</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"windowBits: "</span> + windowBits);
<a class="jxr_linenumber" name="1330" href="#1330">1330</a>         }
<a class="jxr_linenumber" name="1331" href="#1331">1331</a> 
<a class="jxr_linenumber" name="1332" href="#1332">1332</a>         <strong class="jxr_keyword">if</strong> (memLevel &lt; 1 || memLevel &gt; JZlib.MAX_MEM_LEVEL ||
<a class="jxr_linenumber" name="1333" href="#1333">1333</a>                 method != JZlib.Z_DEFLATED || windowBits &lt; 9 ||
<a class="jxr_linenumber" name="1334" href="#1334">1334</a>                 windowBits &gt; 15 || level &lt; 0 || level &gt; 9 || strategy &lt; 0 ||
<a class="jxr_linenumber" name="1335" href="#1335">1335</a>                 strategy &gt; JZlib.Z_HUFFMAN_ONLY) {
<a class="jxr_linenumber" name="1336" href="#1336">1336</a>             <strong class="jxr_keyword">return</strong> JZlib.Z_STREAM_ERROR;
<a class="jxr_linenumber" name="1337" href="#1337">1337</a>         }
<a class="jxr_linenumber" name="1338" href="#1338">1338</a> 
<a class="jxr_linenumber" name="1339" href="#1339">1339</a>         strm.dstate = <strong class="jxr_keyword">this</strong>;
<a class="jxr_linenumber" name="1340" href="#1340">1340</a> 
<a class="jxr_linenumber" name="1341" href="#1341">1341</a>         <strong class="jxr_keyword">this</strong>.wrapperType = wrapperType;
<a class="jxr_linenumber" name="1342" href="#1342">1342</a>         w_bits = windowBits;
<a class="jxr_linenumber" name="1343" href="#1343">1343</a>         w_size = 1 &lt;&lt; w_bits;
<a class="jxr_linenumber" name="1344" href="#1344">1344</a>         w_mask = w_size - 1;
<a class="jxr_linenumber" name="1345" href="#1345">1345</a> 
<a class="jxr_linenumber" name="1346" href="#1346">1346</a>         hash_bits = memLevel + 7;
<a class="jxr_linenumber" name="1347" href="#1347">1347</a>         hash_size = 1 &lt;&lt; hash_bits;
<a class="jxr_linenumber" name="1348" href="#1348">1348</a>         hash_mask = hash_size - 1;
<a class="jxr_linenumber" name="1349" href="#1349">1349</a>         hash_shift = (hash_bits + MIN_MATCH - 1) / MIN_MATCH;
<a class="jxr_linenumber" name="1350" href="#1350">1350</a> 
<a class="jxr_linenumber" name="1351" href="#1351">1351</a>         window = <strong class="jxr_keyword">new</strong> byte[w_size * 2];
<a class="jxr_linenumber" name="1352" href="#1352">1352</a>         prev = <strong class="jxr_keyword">new</strong> <strong class="jxr_keyword">short</strong>[w_size];
<a class="jxr_linenumber" name="1353" href="#1353">1353</a>         head = <strong class="jxr_keyword">new</strong> <strong class="jxr_keyword">short</strong>[hash_size];
<a class="jxr_linenumber" name="1354" href="#1354">1354</a> 
<a class="jxr_linenumber" name="1355" href="#1355">1355</a>         lit_bufsize = 1 &lt;&lt; memLevel + 6; <em class="jxr_comment">// 16K elements by default</em>
<a class="jxr_linenumber" name="1356" href="#1356">1356</a> 
<a class="jxr_linenumber" name="1357" href="#1357">1357</a>         <em class="jxr_comment">// We overlay pending_buf and d_buf+l_buf. This works since the average</em>
<a class="jxr_linenumber" name="1358" href="#1358">1358</a>         <em class="jxr_comment">// output size for (length,distance) codes is &lt;= 24 bits.</em>
<a class="jxr_linenumber" name="1359" href="#1359">1359</a>         pending_buf = <strong class="jxr_keyword">new</strong> byte[lit_bufsize * 4];
<a class="jxr_linenumber" name="1360" href="#1360">1360</a>         pending_buf_size = lit_bufsize * 4;
<a class="jxr_linenumber" name="1361" href="#1361">1361</a> 
<a class="jxr_linenumber" name="1362" href="#1362">1362</a>         d_buf = lit_bufsize / 2;
<a class="jxr_linenumber" name="1363" href="#1363">1363</a>         l_buf = (1 + 2) * lit_bufsize;
<a class="jxr_linenumber" name="1364" href="#1364">1364</a> 
<a class="jxr_linenumber" name="1365" href="#1365">1365</a>         <strong class="jxr_keyword">this</strong>.level = level;
<a class="jxr_linenumber" name="1366" href="#1366">1366</a> 
<a class="jxr_linenumber" name="1367" href="#1367">1367</a>         <em class="jxr_comment">//System.out.println("level="+level);</em>
<a class="jxr_linenumber" name="1368" href="#1368">1368</a> 
<a class="jxr_linenumber" name="1369" href="#1369">1369</a>         <strong class="jxr_keyword">this</strong>.strategy = strategy;
<a class="jxr_linenumber" name="1370" href="#1370">1370</a> 
<a class="jxr_linenumber" name="1371" href="#1371">1371</a>         <strong class="jxr_keyword">return</strong> deflateReset(strm);
<a class="jxr_linenumber" name="1372" href="#1372">1372</a>     }
<a class="jxr_linenumber" name="1373" href="#1373">1373</a> 
<a class="jxr_linenumber" name="1374" href="#1374">1374</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> deflateReset(<a href="../../../../../../org/jboss/netty/util/internal/jzlib/ZStream.html">ZStream</a> strm) {
<a class="jxr_linenumber" name="1375" href="#1375">1375</a>         strm.total_in = strm.total_out = 0;
<a class="jxr_linenumber" name="1376" href="#1376">1376</a>         strm.msg = <strong class="jxr_keyword">null</strong>; <em class="jxr_comment">//</em>
<a class="jxr_linenumber" name="1377" href="#1377">1377</a> 
<a class="jxr_linenumber" name="1378" href="#1378">1378</a>         pending = 0;
<a class="jxr_linenumber" name="1379" href="#1379">1379</a>         pending_out = 0;
<a class="jxr_linenumber" name="1380" href="#1380">1380</a> 
<a class="jxr_linenumber" name="1381" href="#1381">1381</a>         wroteTrailer = false;
<a class="jxr_linenumber" name="1382" href="#1382">1382</a>         status = wrapperType == WrapperType.NONE? BUSY_STATE : INIT_STATE;
<a class="jxr_linenumber" name="1383" href="#1383">1383</a>         strm.adler = Adler32.adler32(0, <strong class="jxr_keyword">null</strong>, 0, 0);
<a class="jxr_linenumber" name="1384" href="#1384">1384</a>         strm.crc32 = 0;
<a class="jxr_linenumber" name="1385" href="#1385">1385</a>         gzipUncompressedBytes = 0;
<a class="jxr_linenumber" name="1386" href="#1386">1386</a> 
<a class="jxr_linenumber" name="1387" href="#1387">1387</a>         last_flush = JZlib.Z_NO_FLUSH;
<a class="jxr_linenumber" name="1388" href="#1388">1388</a> 
<a class="jxr_linenumber" name="1389" href="#1389">1389</a>         tr_init();
<a class="jxr_linenumber" name="1390" href="#1390">1390</a>         lm_init();
<a class="jxr_linenumber" name="1391" href="#1391">1391</a>         <strong class="jxr_keyword">return</strong> JZlib.Z_OK;
<a class="jxr_linenumber" name="1392" href="#1392">1392</a>     }
<a class="jxr_linenumber" name="1393" href="#1393">1393</a> 
<a class="jxr_linenumber" name="1394" href="#1394">1394</a>     <strong class="jxr_keyword">int</strong> deflateEnd() {
<a class="jxr_linenumber" name="1395" href="#1395">1395</a>         <strong class="jxr_keyword">if</strong> (status != INIT_STATE &amp;&amp; status != BUSY_STATE &amp;&amp;
<a class="jxr_linenumber" name="1396" href="#1396">1396</a>                 status != FINISH_STATE) {
<a class="jxr_linenumber" name="1397" href="#1397">1397</a>             <strong class="jxr_keyword">return</strong> JZlib.Z_STREAM_ERROR;
<a class="jxr_linenumber" name="1398" href="#1398">1398</a>         }
<a class="jxr_linenumber" name="1399" href="#1399">1399</a>         <em class="jxr_comment">// Deallocate in reverse order of allocations:</em>
<a class="jxr_linenumber" name="1400" href="#1400">1400</a>         pending_buf = <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="1401" href="#1401">1401</a>         head = <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="1402" href="#1402">1402</a>         prev = <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="1403" href="#1403">1403</a>         window = <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="1404" href="#1404">1404</a>         <em class="jxr_comment">// free</em>
<a class="jxr_linenumber" name="1405" href="#1405">1405</a>         <em class="jxr_comment">// dstate=null;</em>
<a class="jxr_linenumber" name="1406" href="#1406">1406</a>         <strong class="jxr_keyword">return</strong> status == BUSY_STATE? JZlib.Z_DATA_ERROR : JZlib.Z_OK;
<a class="jxr_linenumber" name="1407" href="#1407">1407</a>     }
<a class="jxr_linenumber" name="1408" href="#1408">1408</a> 
<a class="jxr_linenumber" name="1409" href="#1409">1409</a>     <strong class="jxr_keyword">int</strong> deflateParams(<a href="../../../../../../org/jboss/netty/util/internal/jzlib/ZStream.html">ZStream</a> strm, <strong class="jxr_keyword">int</strong> _level, <strong class="jxr_keyword">int</strong> _strategy) {
<a class="jxr_linenumber" name="1410" href="#1410">1410</a>         <strong class="jxr_keyword">int</strong> err = JZlib.Z_OK;
<a class="jxr_linenumber" name="1411" href="#1411">1411</a> 
<a class="jxr_linenumber" name="1412" href="#1412">1412</a>         <strong class="jxr_keyword">if</strong> (_level == JZlib.Z_DEFAULT_COMPRESSION) {
<a class="jxr_linenumber" name="1413" href="#1413">1413</a>             _level = 6;
<a class="jxr_linenumber" name="1414" href="#1414">1414</a>         }
<a class="jxr_linenumber" name="1415" href="#1415">1415</a>         <strong class="jxr_keyword">if</strong> (_level &lt; 0 || _level &gt; 9 || _strategy &lt; 0 ||
<a class="jxr_linenumber" name="1416" href="#1416">1416</a>                 _strategy &gt; JZlib.Z_HUFFMAN_ONLY) {
<a class="jxr_linenumber" name="1417" href="#1417">1417</a>             <strong class="jxr_keyword">return</strong> JZlib.Z_STREAM_ERROR;
<a class="jxr_linenumber" name="1418" href="#1418">1418</a>         }
<a class="jxr_linenumber" name="1419" href="#1419">1419</a> 
<a class="jxr_linenumber" name="1420" href="#1420">1420</a>         <strong class="jxr_keyword">if</strong> (config_table[level].func != config_table[_level].func &amp;&amp;
<a class="jxr_linenumber" name="1421" href="#1421">1421</a>                 strm.total_in != 0) {
<a class="jxr_linenumber" name="1422" href="#1422">1422</a>             <em class="jxr_comment">// Flush the last buffer:</em>
<a class="jxr_linenumber" name="1423" href="#1423">1423</a>             err = strm.deflate(JZlib.Z_PARTIAL_FLUSH);
<a class="jxr_linenumber" name="1424" href="#1424">1424</a>         }
<a class="jxr_linenumber" name="1425" href="#1425">1425</a> 
<a class="jxr_linenumber" name="1426" href="#1426">1426</a>         <strong class="jxr_keyword">if</strong> (level != _level) {
<a class="jxr_linenumber" name="1427" href="#1427">1427</a>             level = _level;
<a class="jxr_linenumber" name="1428" href="#1428">1428</a>             max_lazy_match = config_table[level].max_lazy;
<a class="jxr_linenumber" name="1429" href="#1429">1429</a>             good_match = config_table[level].good_length;
<a class="jxr_linenumber" name="1430" href="#1430">1430</a>             nice_match = config_table[level].nice_length;
<a class="jxr_linenumber" name="1431" href="#1431">1431</a>             max_chain_length = config_table[level].max_chain;
<a class="jxr_linenumber" name="1432" href="#1432">1432</a>         }
<a class="jxr_linenumber" name="1433" href="#1433">1433</a>         strategy = _strategy;
<a class="jxr_linenumber" name="1434" href="#1434">1434</a>         <strong class="jxr_keyword">return</strong> err;
<a class="jxr_linenumber" name="1435" href="#1435">1435</a>     }
<a class="jxr_linenumber" name="1436" href="#1436">1436</a> 
<a class="jxr_linenumber" name="1437" href="#1437">1437</a>     <strong class="jxr_keyword">int</strong> deflateSetDictionary(<a href="../../../../../../org/jboss/netty/util/internal/jzlib/ZStream.html">ZStream</a> strm, byte[] dictionary, <strong class="jxr_keyword">int</strong> dictLength) {
<a class="jxr_linenumber" name="1438" href="#1438">1438</a>         <strong class="jxr_keyword">int</strong> length = dictLength;
<a class="jxr_linenumber" name="1439" href="#1439">1439</a>         <strong class="jxr_keyword">int</strong> index = 0;
<a class="jxr_linenumber" name="1440" href="#1440">1440</a> 
<a class="jxr_linenumber" name="1441" href="#1441">1441</a>         <strong class="jxr_keyword">if</strong> (dictionary == <strong class="jxr_keyword">null</strong> || status != INIT_STATE) {
<a class="jxr_linenumber" name="1442" href="#1442">1442</a>             <strong class="jxr_keyword">return</strong> JZlib.Z_STREAM_ERROR;
<a class="jxr_linenumber" name="1443" href="#1443">1443</a>         }
<a class="jxr_linenumber" name="1444" href="#1444">1444</a> 
<a class="jxr_linenumber" name="1445" href="#1445">1445</a>         strm.adler = Adler32.adler32(strm.adler, dictionary, 0, dictLength);
<a class="jxr_linenumber" name="1446" href="#1446">1446</a> 
<a class="jxr_linenumber" name="1447" href="#1447">1447</a>         <strong class="jxr_keyword">if</strong> (length &lt; MIN_MATCH) {
<a class="jxr_linenumber" name="1448" href="#1448">1448</a>             <strong class="jxr_keyword">return</strong> JZlib.Z_OK;
<a class="jxr_linenumber" name="1449" href="#1449">1449</a>         }
<a class="jxr_linenumber" name="1450" href="#1450">1450</a>         <strong class="jxr_keyword">if</strong> (length &gt; w_size - MIN_LOOKAHEAD) {
<a class="jxr_linenumber" name="1451" href="#1451">1451</a>             length = w_size - MIN_LOOKAHEAD;
<a class="jxr_linenumber" name="1452" href="#1452">1452</a>             index = dictLength - length; <em class="jxr_comment">// use the tail of the dictionary</em>
<a class="jxr_linenumber" name="1453" href="#1453">1453</a>         }
<a class="jxr_linenumber" name="1454" href="#1454">1454</a>         System.arraycopy(dictionary, index, window, 0, length);
<a class="jxr_linenumber" name="1455" href="#1455">1455</a>         strstart = length;
<a class="jxr_linenumber" name="1456" href="#1456">1456</a>         block_start = length;
<a class="jxr_linenumber" name="1457" href="#1457">1457</a> 
<a class="jxr_linenumber" name="1458" href="#1458">1458</a>         <em class="jxr_comment">// Insert all strings in the hash table (except for the last two bytes).</em>
<a class="jxr_linenumber" name="1459" href="#1459">1459</a>         <em class="jxr_comment">// s-&gt;lookahead stays null, so s-&gt;ins_h will be recomputed at the next</em>
<a class="jxr_linenumber" name="1460" href="#1460">1460</a>         <em class="jxr_comment">// call of fill_window.</em>
<a class="jxr_linenumber" name="1461" href="#1461">1461</a> 
<a class="jxr_linenumber" name="1462" href="#1462">1462</a>         ins_h = window[0] &amp; 0xff;
<a class="jxr_linenumber" name="1463" href="#1463">1463</a>         ins_h = (ins_h &lt;&lt; hash_shift ^ window[1] &amp; 0xff) &amp; hash_mask;
<a class="jxr_linenumber" name="1464" href="#1464">1464</a> 
<a class="jxr_linenumber" name="1465" href="#1465">1465</a>         <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> n = 0; n &lt;= length - MIN_MATCH; n ++) {
<a class="jxr_linenumber" name="1466" href="#1466">1466</a>             ins_h = (ins_h &lt;&lt; hash_shift ^ window[n + MIN_MATCH - 1] &amp; 0xff) &amp;
<a class="jxr_linenumber" name="1467" href="#1467">1467</a>                     hash_mask;
<a class="jxr_linenumber" name="1468" href="#1468">1468</a>             prev[n &amp; w_mask] = head[ins_h];
<a class="jxr_linenumber" name="1469" href="#1469">1469</a>             head[ins_h] = (<strong class="jxr_keyword">short</strong>) n;
<a class="jxr_linenumber" name="1470" href="#1470">1470</a>         }
<a class="jxr_linenumber" name="1471" href="#1471">1471</a>         <strong class="jxr_keyword">return</strong> JZlib.Z_OK;
<a class="jxr_linenumber" name="1472" href="#1472">1472</a>     }
<a class="jxr_linenumber" name="1473" href="#1473">1473</a> 
<a class="jxr_linenumber" name="1474" href="#1474">1474</a>     <strong class="jxr_keyword">int</strong> deflate(<a href="../../../../../../org/jboss/netty/util/internal/jzlib/ZStream.html">ZStream</a> strm, <strong class="jxr_keyword">int</strong> flush) {
<a class="jxr_linenumber" name="1475" href="#1475">1475</a>         <strong class="jxr_keyword">int</strong> old_flush;
<a class="jxr_linenumber" name="1476" href="#1476">1476</a> 
<a class="jxr_linenumber" name="1477" href="#1477">1477</a>         <strong class="jxr_keyword">if</strong> (flush &gt; JZlib.Z_FINISH || flush &lt; 0) {
<a class="jxr_linenumber" name="1478" href="#1478">1478</a>             <strong class="jxr_keyword">return</strong> JZlib.Z_STREAM_ERROR;
<a class="jxr_linenumber" name="1479" href="#1479">1479</a>         }
<a class="jxr_linenumber" name="1480" href="#1480">1480</a> 
<a class="jxr_linenumber" name="1481" href="#1481">1481</a>         <strong class="jxr_keyword">if</strong> (strm.next_out == <strong class="jxr_keyword">null</strong> || strm.next_in == <strong class="jxr_keyword">null</strong> &amp;&amp;
<a class="jxr_linenumber" name="1482" href="#1482">1482</a>                 strm.avail_in != 0 || status == FINISH_STATE &amp;&amp;
<a class="jxr_linenumber" name="1483" href="#1483">1483</a>                 flush != JZlib.Z_FINISH) {
<a class="jxr_linenumber" name="1484" href="#1484">1484</a>             strm.msg = z_errmsg[JZlib.Z_NEED_DICT - JZlib.Z_STREAM_ERROR];
<a class="jxr_linenumber" name="1485" href="#1485">1485</a>             <strong class="jxr_keyword">return</strong> JZlib.Z_STREAM_ERROR;
<a class="jxr_linenumber" name="1486" href="#1486">1486</a>         }
<a class="jxr_linenumber" name="1487" href="#1487">1487</a>         <strong class="jxr_keyword">if</strong> (strm.avail_out == 0) {
<a class="jxr_linenumber" name="1488" href="#1488">1488</a>             strm.msg = z_errmsg[JZlib.Z_NEED_DICT - JZlib.Z_BUF_ERROR];
<a class="jxr_linenumber" name="1489" href="#1489">1489</a>             <strong class="jxr_keyword">return</strong> JZlib.Z_BUF_ERROR;
<a class="jxr_linenumber" name="1490" href="#1490">1490</a>         }
<a class="jxr_linenumber" name="1491" href="#1491">1491</a> 
<a class="jxr_linenumber" name="1492" href="#1492">1492</a>         <strong class="jxr_keyword">this</strong>.strm = strm; <em class="jxr_comment">// just in case</em>
<a class="jxr_linenumber" name="1493" href="#1493">1493</a>         old_flush = last_flush;
<a class="jxr_linenumber" name="1494" href="#1494">1494</a>         last_flush = flush;
<a class="jxr_linenumber" name="1495" href="#1495">1495</a> 
<a class="jxr_linenumber" name="1496" href="#1496">1496</a>         <em class="jxr_comment">// Write the zlib header</em>
<a class="jxr_linenumber" name="1497" href="#1497">1497</a>         <strong class="jxr_keyword">if</strong> (status == INIT_STATE) {
<a class="jxr_linenumber" name="1498" href="#1498">1498</a>             <strong class="jxr_keyword">switch</strong> (wrapperType) {
<a class="jxr_linenumber" name="1499" href="#1499">1499</a>             <strong class="jxr_keyword">case</strong> ZLIB:
<a class="jxr_linenumber" name="1500" href="#1500">1500</a>                 <strong class="jxr_keyword">int</strong> header = JZlib.Z_DEFLATED + (w_bits - 8 &lt;&lt; 4) &lt;&lt; 8;
<a class="jxr_linenumber" name="1501" href="#1501">1501</a>                 <strong class="jxr_keyword">int</strong> level_flags = (level - 1 &amp; 0xff) &gt;&gt; 1;
<a class="jxr_linenumber" name="1502" href="#1502">1502</a> 
<a class="jxr_linenumber" name="1503" href="#1503">1503</a>                 <strong class="jxr_keyword">if</strong> (level_flags &gt; 3) {
<a class="jxr_linenumber" name="1504" href="#1504">1504</a>                     level_flags = 3;
<a class="jxr_linenumber" name="1505" href="#1505">1505</a>                 }
<a class="jxr_linenumber" name="1506" href="#1506">1506</a>                 header |= level_flags &lt;&lt; 6;
<a class="jxr_linenumber" name="1507" href="#1507">1507</a>                 <strong class="jxr_keyword">if</strong> (strstart != 0) {
<a class="jxr_linenumber" name="1508" href="#1508">1508</a>                     header |= JZlib.PRESET_DICT;
<a class="jxr_linenumber" name="1509" href="#1509">1509</a>                 }
<a class="jxr_linenumber" name="1510" href="#1510">1510</a>                 header += 31 - header % 31;
<a class="jxr_linenumber" name="1511" href="#1511">1511</a> 
<a class="jxr_linenumber" name="1512" href="#1512">1512</a>                 putShortMSB(header);
<a class="jxr_linenumber" name="1513" href="#1513">1513</a> 
<a class="jxr_linenumber" name="1514" href="#1514">1514</a>                 <em class="jxr_comment">// Save the adler32 of the preset dictionary:</em>
<a class="jxr_linenumber" name="1515" href="#1515">1515</a>                 <strong class="jxr_keyword">if</strong> (strstart != 0) {
<a class="jxr_linenumber" name="1516" href="#1516">1516</a>                     putShortMSB((<strong class="jxr_keyword">int</strong>) (strm.adler &gt;&gt;&gt; 16));
<a class="jxr_linenumber" name="1517" href="#1517">1517</a>                     putShortMSB((<strong class="jxr_keyword">int</strong>) (strm.adler &amp; 0xffff));
<a class="jxr_linenumber" name="1518" href="#1518">1518</a>                 }
<a class="jxr_linenumber" name="1519" href="#1519">1519</a>                 strm.adler = Adler32.adler32(0, <strong class="jxr_keyword">null</strong>, 0, 0);
<a class="jxr_linenumber" name="1520" href="#1520">1520</a>                 <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="1521" href="#1521">1521</a>             <strong class="jxr_keyword">case</strong> GZIP:
<a class="jxr_linenumber" name="1522" href="#1522">1522</a>                 <em class="jxr_comment">// Identification</em>
<a class="jxr_linenumber" name="1523" href="#1523">1523</a>                 put_byte((byte) 0x1f);
<a class="jxr_linenumber" name="1524" href="#1524">1524</a>                 put_byte((byte) 0x8b);
<a class="jxr_linenumber" name="1525" href="#1525">1525</a>                 <em class="jxr_comment">// Compression method: DEFLATE</em>
<a class="jxr_linenumber" name="1526" href="#1526">1526</a>                 put_byte((byte) 8);
<a class="jxr_linenumber" name="1527" href="#1527">1527</a>                 <em class="jxr_comment">// Flags</em>
<a class="jxr_linenumber" name="1528" href="#1528">1528</a>                 put_byte((byte) 0);
<a class="jxr_linenumber" name="1529" href="#1529">1529</a>                 <em class="jxr_comment">// MTIME</em>
<a class="jxr_linenumber" name="1530" href="#1530">1530</a>                 put_byte((byte) 0);
<a class="jxr_linenumber" name="1531" href="#1531">1531</a>                 put_byte((byte) 0);
<a class="jxr_linenumber" name="1532" href="#1532">1532</a>                 put_byte((byte) 0);
<a class="jxr_linenumber" name="1533" href="#1533">1533</a>                 put_byte((byte) 0);
<a class="jxr_linenumber" name="1534" href="#1534">1534</a>                 <em class="jxr_comment">// XFL</em>
<a class="jxr_linenumber" name="1535" href="#1535">1535</a>                 <strong class="jxr_keyword">switch</strong> (config_table[level].func) {
<a class="jxr_linenumber" name="1536" href="#1536">1536</a>                 <strong class="jxr_keyword">case</strong> FAST:
<a class="jxr_linenumber" name="1537" href="#1537">1537</a>                     put_byte((byte) 4);
<a class="jxr_linenumber" name="1538" href="#1538">1538</a>                     <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="1539" href="#1539">1539</a>                 <strong class="jxr_keyword">case</strong> SLOW:
<a class="jxr_linenumber" name="1540" href="#1540">1540</a>                     put_byte((byte) 2);
<a class="jxr_linenumber" name="1541" href="#1541">1541</a>                     <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="1542" href="#1542">1542</a>                 <strong class="jxr_keyword">default</strong>:
<a class="jxr_linenumber" name="1543" href="#1543">1543</a>                     put_byte((byte) 0);
<a class="jxr_linenumber" name="1544" href="#1544">1544</a>                     <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="1545" href="#1545">1545</a>                 }
<a class="jxr_linenumber" name="1546" href="#1546">1546</a>                 <em class="jxr_comment">// OS</em>
<a class="jxr_linenumber" name="1547" href="#1547">1547</a>                 put_byte((byte) 255);
<a class="jxr_linenumber" name="1548" href="#1548">1548</a> 
<a class="jxr_linenumber" name="1549" href="#1549">1549</a>                 strm.crc32 = 0;
<a class="jxr_linenumber" name="1550" href="#1550">1550</a>                 <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="1551" href="#1551">1551</a>             }
<a class="jxr_linenumber" name="1552" href="#1552">1552</a> 
<a class="jxr_linenumber" name="1553" href="#1553">1553</a>             status = BUSY_STATE;
<a class="jxr_linenumber" name="1554" href="#1554">1554</a>         }
<a class="jxr_linenumber" name="1555" href="#1555">1555</a> 
<a class="jxr_linenumber" name="1556" href="#1556">1556</a>         <em class="jxr_comment">// Flush as much pending output as possible</em>
<a class="jxr_linenumber" name="1557" href="#1557">1557</a>         <strong class="jxr_keyword">if</strong> (pending != 0) {
<a class="jxr_linenumber" name="1558" href="#1558">1558</a>             strm.flush_pending();
<a class="jxr_linenumber" name="1559" href="#1559">1559</a>             <strong class="jxr_keyword">if</strong> (strm.avail_out == 0) {
<a class="jxr_linenumber" name="1560" href="#1560">1560</a>                 <em class="jxr_comment">//System.out.println("  avail_out==0");</em>
<a class="jxr_linenumber" name="1561" href="#1561">1561</a>                 <em class="jxr_comment">// Since avail_out is 0, deflate will be called again with</em>
<a class="jxr_linenumber" name="1562" href="#1562">1562</a>                 <em class="jxr_comment">// more output space, but possibly with both pending and</em>
<a class="jxr_linenumber" name="1563" href="#1563">1563</a>                 <em class="jxr_comment">// avail_in equal to zero. There won't be anything to do,</em>
<a class="jxr_linenumber" name="1564" href="#1564">1564</a>                 <em class="jxr_comment">// but this is not an error situation so make sure we</em>
<a class="jxr_linenumber" name="1565" href="#1565">1565</a>                 <em class="jxr_comment">// return OK instead of BUF_ERROR at next call of deflate:</em>
<a class="jxr_linenumber" name="1566" href="#1566">1566</a>                 last_flush = -1;
<a class="jxr_linenumber" name="1567" href="#1567">1567</a>                 <strong class="jxr_keyword">return</strong> JZlib.Z_OK;
<a class="jxr_linenumber" name="1568" href="#1568">1568</a>             }
<a class="jxr_linenumber" name="1569" href="#1569">1569</a> 
<a class="jxr_linenumber" name="1570" href="#1570">1570</a>             <em class="jxr_comment">// Make sure there is something to do and avoid duplicate consecutive</em>
<a class="jxr_linenumber" name="1571" href="#1571">1571</a>             <em class="jxr_comment">// flushes. For repeated and useless calls with Z_FINISH, we keep</em>
<a class="jxr_linenumber" name="1572" href="#1572">1572</a>             <em class="jxr_comment">// returning Z_STREAM_END instead of Z_BUFF_ERROR.</em>
<a class="jxr_linenumber" name="1573" href="#1573">1573</a>         } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (strm.avail_in == 0 &amp;&amp; flush &lt;= old_flush &amp;&amp;
<a class="jxr_linenumber" name="1574" href="#1574">1574</a>                 flush != JZlib.Z_FINISH) {
<a class="jxr_linenumber" name="1575" href="#1575">1575</a>             strm.msg = z_errmsg[JZlib.Z_NEED_DICT - JZlib.Z_BUF_ERROR];
<a class="jxr_linenumber" name="1576" href="#1576">1576</a>             <strong class="jxr_keyword">return</strong> JZlib.Z_BUF_ERROR;
<a class="jxr_linenumber" name="1577" href="#1577">1577</a>         }
<a class="jxr_linenumber" name="1578" href="#1578">1578</a> 
<a class="jxr_linenumber" name="1579" href="#1579">1579</a>         <em class="jxr_comment">// User must not provide more input after the first FINISH:</em>
<a class="jxr_linenumber" name="1580" href="#1580">1580</a>         <strong class="jxr_keyword">if</strong> (status == FINISH_STATE &amp;&amp; strm.avail_in != 0) {
<a class="jxr_linenumber" name="1581" href="#1581">1581</a>             strm.msg = z_errmsg[JZlib.Z_NEED_DICT - JZlib.Z_BUF_ERROR];
<a class="jxr_linenumber" name="1582" href="#1582">1582</a>             <strong class="jxr_keyword">return</strong> JZlib.Z_BUF_ERROR;
<a class="jxr_linenumber" name="1583" href="#1583">1583</a>         }
<a class="jxr_linenumber" name="1584" href="#1584">1584</a> 
<a class="jxr_linenumber" name="1585" href="#1585">1585</a>         <em class="jxr_comment">// Start a new block or continue the current one.</em>
<a class="jxr_linenumber" name="1586" href="#1586">1586</a>         <strong class="jxr_keyword">int</strong> old_next_in_index = strm.next_in_index;
<a class="jxr_linenumber" name="1587" href="#1587">1587</a>         <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="1588" href="#1588">1588</a>             <strong class="jxr_keyword">if</strong> (strm.avail_in != 0 || lookahead != 0 || flush != JZlib.Z_NO_FLUSH &amp;&amp;
<a class="jxr_linenumber" name="1589" href="#1589">1589</a>                     status != FINISH_STATE) {
<a class="jxr_linenumber" name="1590" href="#1590">1590</a>                 <strong class="jxr_keyword">int</strong> bstate = -1;
<a class="jxr_linenumber" name="1591" href="#1591">1591</a>                 <strong class="jxr_keyword">switch</strong> (config_table[level].func) {
<a class="jxr_linenumber" name="1592" href="#1592">1592</a>                 <strong class="jxr_keyword">case</strong> STORED:
<a class="jxr_linenumber" name="1593" href="#1593">1593</a>                     bstate = deflate_stored(flush);
<a class="jxr_linenumber" name="1594" href="#1594">1594</a>                     <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="1595" href="#1595">1595</a>                 <strong class="jxr_keyword">case</strong> FAST:
<a class="jxr_linenumber" name="1596" href="#1596">1596</a>                     bstate = deflate_fast(flush);
<a class="jxr_linenumber" name="1597" href="#1597">1597</a>                     <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="1598" href="#1598">1598</a>                 <strong class="jxr_keyword">case</strong> SLOW:
<a class="jxr_linenumber" name="1599" href="#1599">1599</a>                     bstate = deflate_slow(flush);
<a class="jxr_linenumber" name="1600" href="#1600">1600</a>                     <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="1601" href="#1601">1601</a>                 <strong class="jxr_keyword">default</strong>:
<a class="jxr_linenumber" name="1602" href="#1602">1602</a>                 }
<a class="jxr_linenumber" name="1603" href="#1603">1603</a> 
<a class="jxr_linenumber" name="1604" href="#1604">1604</a>                 <strong class="jxr_keyword">if</strong> (bstate == FinishStarted || bstate == FinishDone) {
<a class="jxr_linenumber" name="1605" href="#1605">1605</a>                     status = FINISH_STATE;
<a class="jxr_linenumber" name="1606" href="#1606">1606</a>                 }
<a class="jxr_linenumber" name="1607" href="#1607">1607</a>                 <strong class="jxr_keyword">if</strong> (bstate == NeedMore || bstate == FinishStarted) {
<a class="jxr_linenumber" name="1608" href="#1608">1608</a>                     <strong class="jxr_keyword">if</strong> (strm.avail_out == 0) {
<a class="jxr_linenumber" name="1609" href="#1609">1609</a>                         last_flush = -1; <em class="jxr_comment">// avoid BUF_ERROR next call, see above</em>
<a class="jxr_linenumber" name="1610" href="#1610">1610</a>                     }
<a class="jxr_linenumber" name="1611" href="#1611">1611</a>                     <strong class="jxr_keyword">return</strong> JZlib.Z_OK;
<a class="jxr_linenumber" name="1612" href="#1612">1612</a>                     <em class="jxr_comment">// If flush != Z_NO_FLUSH &amp;&amp; avail_out == 0, the next call</em>
<a class="jxr_linenumber" name="1613" href="#1613">1613</a>                     <em class="jxr_comment">// of deflate should use the same flush parameter to make sure</em>
<a class="jxr_linenumber" name="1614" href="#1614">1614</a>                     <em class="jxr_comment">// that the flush is complete. So we don't have to output an</em>
<a class="jxr_linenumber" name="1615" href="#1615">1615</a>                     <em class="jxr_comment">// empty block here, this will be done at next call. This also</em>
<a class="jxr_linenumber" name="1616" href="#1616">1616</a>                     <em class="jxr_comment">// ensures that for a very small output buffer, we emit at most</em>
<a class="jxr_linenumber" name="1617" href="#1617">1617</a>                     <em class="jxr_comment">// one empty block.</em>
<a class="jxr_linenumber" name="1618" href="#1618">1618</a>                 }
<a class="jxr_linenumber" name="1619" href="#1619">1619</a> 
<a class="jxr_linenumber" name="1620" href="#1620">1620</a>                 <strong class="jxr_keyword">if</strong> (bstate == BlockDone) {
<a class="jxr_linenumber" name="1621" href="#1621">1621</a>                     <strong class="jxr_keyword">if</strong> (flush == JZlib.Z_PARTIAL_FLUSH) {
<a class="jxr_linenumber" name="1622" href="#1622">1622</a>                         _tr_align();
<a class="jxr_linenumber" name="1623" href="#1623">1623</a>                     } <strong class="jxr_keyword">else</strong> { <em class="jxr_comment">// FULL_FLUSH or SYNC_FLUSH</em>
<a class="jxr_linenumber" name="1624" href="#1624">1624</a>                         _tr_stored_block(0, 0, false);
<a class="jxr_linenumber" name="1625" href="#1625">1625</a>                         <em class="jxr_comment">// For a full flush, this empty block will be recognized</em>
<a class="jxr_linenumber" name="1626" href="#1626">1626</a>                         <em class="jxr_comment">// as a special marker by inflate_sync().</em>
<a class="jxr_linenumber" name="1627" href="#1627">1627</a>                         <strong class="jxr_keyword">if</strong> (flush == JZlib.Z_FULL_FLUSH) {
<a class="jxr_linenumber" name="1628" href="#1628">1628</a>                             <em class="jxr_comment">//state.head[s.hash_size-1]=0;</em>
<a class="jxr_linenumber" name="1629" href="#1629">1629</a>                             <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; hash_size<em class="jxr_comment">/*<em class="jxr_comment">-1*/</em>; i ++) {</em>
<a class="jxr_linenumber" name="1630" href="#1630">1630</a>                                 head[i] = 0;
<a class="jxr_linenumber" name="1631" href="#1631">1631</a>                             }
<a class="jxr_linenumber" name="1632" href="#1632">1632</a>                         }
<a class="jxr_linenumber" name="1633" href="#1633">1633</a>                     }
<a class="jxr_linenumber" name="1634" href="#1634">1634</a>                     strm.flush_pending();
<a class="jxr_linenumber" name="1635" href="#1635">1635</a>                     <strong class="jxr_keyword">if</strong> (strm.avail_out == 0) {
<a class="jxr_linenumber" name="1636" href="#1636">1636</a>                         last_flush = -1; <em class="jxr_comment">// avoid BUF_ERROR at next call, see above</em>
<a class="jxr_linenumber" name="1637" href="#1637">1637</a>                         <strong class="jxr_keyword">return</strong> JZlib.Z_OK;
<a class="jxr_linenumber" name="1638" href="#1638">1638</a>                     }
<a class="jxr_linenumber" name="1639" href="#1639">1639</a>                 }
<a class="jxr_linenumber" name="1640" href="#1640">1640</a>             }
<a class="jxr_linenumber" name="1641" href="#1641">1641</a>         } <strong class="jxr_keyword">finally</strong> {
<a class="jxr_linenumber" name="1642" href="#1642">1642</a>             gzipUncompressedBytes += strm.next_in_index - old_next_in_index;
<a class="jxr_linenumber" name="1643" href="#1643">1643</a>         }
<a class="jxr_linenumber" name="1644" href="#1644">1644</a> 
<a class="jxr_linenumber" name="1645" href="#1645">1645</a>         <strong class="jxr_keyword">if</strong> (flush != JZlib.Z_FINISH) {
<a class="jxr_linenumber" name="1646" href="#1646">1646</a>             <strong class="jxr_keyword">return</strong> JZlib.Z_OK;
<a class="jxr_linenumber" name="1647" href="#1647">1647</a>         }
<a class="jxr_linenumber" name="1648" href="#1648">1648</a> 
<a class="jxr_linenumber" name="1649" href="#1649">1649</a>         <strong class="jxr_keyword">if</strong> (wrapperType == WrapperType.NONE || wroteTrailer) {
<a class="jxr_linenumber" name="1650" href="#1650">1650</a>             <strong class="jxr_keyword">return</strong> JZlib.Z_STREAM_END;
<a class="jxr_linenumber" name="1651" href="#1651">1651</a>         }
<a class="jxr_linenumber" name="1652" href="#1652">1652</a> 
<a class="jxr_linenumber" name="1653" href="#1653">1653</a>         <strong class="jxr_keyword">switch</strong> (wrapperType) {
<a class="jxr_linenumber" name="1654" href="#1654">1654</a>         <strong class="jxr_keyword">case</strong> ZLIB:
<a class="jxr_linenumber" name="1655" href="#1655">1655</a>             <em class="jxr_comment">// Write the zlib trailer (adler32)</em>
<a class="jxr_linenumber" name="1656" href="#1656">1656</a>             putShortMSB((<strong class="jxr_keyword">int</strong>) (strm.adler &gt;&gt;&gt; 16));
<a class="jxr_linenumber" name="1657" href="#1657">1657</a>             putShortMSB((<strong class="jxr_keyword">int</strong>) (strm.adler &amp; 0xffff));
<a class="jxr_linenumber" name="1658" href="#1658">1658</a>             <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="1659" href="#1659">1659</a>         <strong class="jxr_keyword">case</strong> GZIP:
<a class="jxr_linenumber" name="1660" href="#1660">1660</a>             <em class="jxr_comment">// Write the gzip trailer (CRC32 &amp; ISIZE)</em>
<a class="jxr_linenumber" name="1661" href="#1661">1661</a>             put_byte((byte) (strm.crc32 &amp; 0xFF));
<a class="jxr_linenumber" name="1662" href="#1662">1662</a>             put_byte((byte) (strm.crc32 &gt;&gt;&gt; 8 &amp; 0xFF));
<a class="jxr_linenumber" name="1663" href="#1663">1663</a>             put_byte((byte) (strm.crc32 &gt;&gt;&gt; 16 &amp; 0xFF));
<a class="jxr_linenumber" name="1664" href="#1664">1664</a>             put_byte((byte) (strm.crc32 &gt;&gt;&gt; 24 &amp; 0xFF));
<a class="jxr_linenumber" name="1665" href="#1665">1665</a>             put_byte((byte) (gzipUncompressedBytes &amp; 0xFF));
<a class="jxr_linenumber" name="1666" href="#1666">1666</a>             put_byte((byte) (gzipUncompressedBytes &gt;&gt;&gt; 8 &amp; 0xFF));
<a class="jxr_linenumber" name="1667" href="#1667">1667</a>             put_byte((byte) (gzipUncompressedBytes &gt;&gt;&gt; 16 &amp; 0xFF));
<a class="jxr_linenumber" name="1668" href="#1668">1668</a>             put_byte((byte) (gzipUncompressedBytes &gt;&gt;&gt; 24 &amp; 0xFF));
<a class="jxr_linenumber" name="1669" href="#1669">1669</a>             <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="1670" href="#1670">1670</a>         }
<a class="jxr_linenumber" name="1671" href="#1671">1671</a> 
<a class="jxr_linenumber" name="1672" href="#1672">1672</a>         strm.flush_pending();
<a class="jxr_linenumber" name="1673" href="#1673">1673</a>         <em class="jxr_comment">// If avail_out is zero, the application will call deflate again</em>
<a class="jxr_linenumber" name="1674" href="#1674">1674</a>         <em class="jxr_comment">// to flush the rest.</em>
<a class="jxr_linenumber" name="1675" href="#1675">1675</a>         wroteTrailer = <strong class="jxr_keyword">true</strong>; <em class="jxr_comment">// write the trailer only once!</em>
<a class="jxr_linenumber" name="1676" href="#1676">1676</a>         <strong class="jxr_keyword">return</strong> pending != 0? JZlib.Z_OK : JZlib.Z_STREAM_END;
<a class="jxr_linenumber" name="1677" href="#1677">1677</a>     }
<a class="jxr_linenumber" name="1678" href="#1678">1678</a> }
</pre>
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